My SF sandbox environment was upgraded to Winter 14 release a few days ago.  I've been doing VisualForce and Apex development for the past few days without any problems but then today, I ran into an odd - but quite debilitating - problem.  I go to the Debug Logs page and attempt to add a user to monitor.  I select the desired user in the "Add Users to Debug Logs" page and click the Save button.  But when I am returned to the Debug Logs page, the user I just selected does not appear!  To make matters worse, this only occurs with a few users - namely the users I need for my development and testing.  I am able to add my own user and several others - just not the ones that I need.  I have never seen this problem before so that led me to think it might be related to the Winter 14 release.  Any ideas?  Thanks in advance!  CORRECTION - confirmed as bug - please see  for workaround instructions.
I am simply adding user in 'Monitored Users' in Debug Logs. But User is not getting added.
Why didn't the Hobbits get frostbite? This is a question that's been bothering me for the last couple of days:  How is it that the hobbits of the Fellowship were able to survive such cold temperatures throughout their travels without having any foot protection?   I know it's said that they have thick "leather like" soles, with ample amounts of hair for warmth but still, I don't understand how that could provide much more warmth than for instance a regular leather shoe. On top of this I know that multiple days (or even weeks) of their journey was spent crossing mountain ranges, which, near a summit would have a temperature far below freezing. This combined with the assumption that they only have the warmth of shoes on there feet would have presumably resulted in some level of frostbite. But to my knowledge there is no such mention of these problems in the novels or movies aside from the odd "It's cold".  Anyways, I'm just wondering if anyone has some form of explanation to this phenomenon or do hobbits just have really durable feet? Clustering on the output of t-SNE I've got an application where it'd be handy to cluster a noisy dataset before looking for subgroup effects within the clusters.  I first looked at PCA, but it takes ~30 components to get to 90% of the variability, so clustering on just a couple of PC's will throw away a lot of information.    I then tried t-SNE (for the first time), which gives me an odd shape in two dimensions that is very amenable to clustering via k-means.  What's more, running a random forest on the data with the cluster assignment as the outcome shows that the clusters have a fairly sensible interpretation given the context of the problem, in terms of the variables that make up the raw data.  But if I'm going to report on these clusters, how do I describe them?  K-means clusters on principal components reveal individuals who are nearby to one another in terms of the derived variables that comprise X% of the variance in the dataset.  What equivalent statement can be made about t-SNE clusters?  Perhaps something to the effect of:     t-SNE reveals approximate contiguity in an underlying high-dimensional manifold, so clusters on the low-dimensional representation of the high-dimensional space maximize the "likelihood" that contiguous individuals will not be in the same cluster   Can anyone propose a better blurb than that? How do I enable Scroll Lock? Cannot login to chat.meta.stackexchange.com; server error when trying to access chat homepage I just recreated my MSE account after having deleted it a few years ago. Now, I'm trying to log in to Meta Stack Exchange Chat, and whenever I try to do so, it just fails silently and I'm still logged out.  Additionally, in the same browser session that I'm supposedly logged out, I get a server error when accessing the chat homepage or the chat profile page of any user. I don't get any errors when trying to access any of these pages in a private session. I also was able to sign in to Stack Exchange Chat and Stack Overflow Chat without problems, since my accounts on SO and my parent site for SE chat haven't been deleted.  I think it might be because it's trying to sign me in to my old chat profile, which was not deleted, but that is associated to my old, deleted site account, which clash and thus cause it to fail. How can multithreading speed up an application (when threads can't run concurrently)? Array Modifier - Fit Curve too short I want to create a simple road. To do this I first want to apply an 'Array Modifier' which fits the curve. So in the Array modifier I changed the 'Fit Type' from 'Fixed Count' to 'Fit Curve'. But now the Path is much shorter than the road it self.  And If I extrude the curve the road goes even longer and longer. Is there a way the road is as long as the path? Can a creature's sacrifice benefit be taken when it is sacrificed to Eldrazi Monument? Dynamically reformatting man pages on terminal dimension changes One common workflow of mine is to open a manual page in a terminal, then another terminal in which to test things. The man page is formatted to the initial dimensions of the first terminal. When I now resize my windows (or have my WM do that for me automatically), there is either a gap to the right of the preformatted page, or lines wrap. At this point I usually q(uit) and !! (run again), which loses my position in the page.  I assume the formatting process is quite CPU intensive, or maybe it stems from ancient times of fixed terminal sizes. The less pager dynamically reacts to terminal resize events, so it should be possible in theory.  I tried perusing man pages, searching the Web, asking on IRC -- the whole lot -- but couldn't come up with anything.   Can I trigger reformatting from within or outside of the man utility? Is there a version of the man utility that resizes the page dynamically?  Is there way to customize some part of the formatting/display process to make it update on SIGWINCH? \RequirePackage{filecontents} \begin{filecontents}{\jobname.bib} @article{Arter95,     Author = {David Arter},     Date-Added = {2013-08-11 17:38:06 +0000},     Date-Modified = {2013-09-01 15:13:22 +0000},     Journal = {Journal of Common Market Studies},     Number = {3},     Pages = {361-287},     Title = {The {EU} {Referendum} in {Finland} on 16 October 1994:              {A} Vote for the {West}, not for {Maastricht}},     Volume = {33},     Year = {1995}}  @article{Detlef95,     Author = {Jahn, Detlef; Storsved,Ann-sofie},     Date-Added = {2013-08-11 17:14:34 +0000},     Date-Modified = {2013-08-11 17:16:45 +0000},     Journal = {West European Politics},     Number = {4},     Pages = {18-37},     Title = {Legitimacy through referendum? The nearly successful domino‚Äêstrategy of the Eu‚Äêreferendums in Austria, Finland, Sweden and Norway},     Volume = {18},     Year = {1995}} \end{filecontents} \documentclass{article} \usepackage[ngerman]{babel} \usepackage{natbib} \bibpunct{(}{)}{;}{a}{}{,} \makeatletter \renewcommand\@biblabel[1]{} \makeatother  \begin{document}  \cite{Arter95}  \bibliography{\jobname} \bibliographystyle{plainnat}  \end{document}   Please help. I want the author's name displayed like this "Arter, D." instead of David Arter todonotes: How to make multiple listoftodos? In this MWE, I made two commands to highlight parts of the text as a reviewer comment, while the comments are colored uniquely to indicate the author whose comment is typeset.  If I want to make two listoftodos, each has the comments entries of one author, how can it be done?  \documentclass{article} \usepackage{hyperref,lipsum}  \usepackage[textwidth=2.5cm,colorinlistoftodos]{todonotes} \setlength{\marginparwidth}{2.5cm}  \newcommand\stR[2]{% 1st reviewer comment     \todo[%     author=1st Reviewer,noline,caption={1st Reviewer #1 Comment},color=blue!20%     ]%     {#1 Comment}{\color{blue}{\bfseries#2}}}  \newcommand\ndR[2]{% 2nd reviewer comment     \todo[%     author=2nd Reviewer,noline,caption={2nd Reviewer #1 Comment},color=red!50!white%     ]%     {#1 Comment}{\color{red}{\bfseries#2}}}  \begin{document} \listoftodos[Reviewers Comments] \section{Section} Text \stR{2nd}{2nd comment of the 1st reviewer} another text\vspace{\baselineskip} \lipsum[1]\vspace{\baselineskip} Some text \ndR{1st}{1st comment of the 2nd reviewer} continue text \end{document} Should I change the URLs in the XML sitemap after 301 redirecting them? I am using 301 redirects for all URLs.  Should I change sitemap URLs now?  The sitemap currently contains the following URLs:   example.com/cat/1.html example.com/cat/2.html example.com/cat/3.html   Should I change the sitemap's URLs to a new destination?   example.com/cat/year/1.html example.com/cat/year/2.html example.com/cat/year/3.html Is "guy" gender-neutral? Background not changing using gsettings from cron I'm trying to change my wallpaper to a random image using Indrajith Indraprastham's suggested script here:    When I run the script from a terminal window, the bg changes just fine, but when it's run from cron, I'm mailed this error:     (process:21901): dconf-WARNING **: failed to commit changes to dconf: Error spawning command line 'dbus-launch --autolaunch=00216c114dcf433c9bb9009985d607d6 --binary-syntax --close-stderr': Child process exited with code 1   I would appreciate any suggestions. Subfields of finite fields My website's google cache copy looks broken.   Below is link to cache.  http://webcache.googleusercontent.com/search?q=cache:http://paintcollar.com  Can this affect the SERPs and crawling by google?  What can I do to rectify it?  PS. Few pages are being cached properly though.Below is URL to one such page. http://webcache.googleusercontent.com/search?q=cache:http://paintcollar.com/aneel Why is the light reflected at the same angle from mirror? From the school physics I know that the material objects bounce from the plane surface at the same angle, losing some kinetic energy. In the same school I was taught that the light (and waves in general) obeys this principle too.  Obviously, in the case of light the plane surface should be a perfect mirror. But I can't understand how should this work from the quantum point of view. Let's assume that our mirror consists of a single silver atom.  Why should the electrons of this atom re-emit consumed photons at some specific angle? How do I take a screenshot on my Mac? What's the easiest way to take a screenshot of my Mac?  I've used Grab.app, but it's a bit annoying just to get a quick screenshot. Is there a faster way? Elantech Touchpad not working on Ubuntu 16.04 and Arch Linux So I have and Asus R558UF notebook with an Elantech Touchpad. After installing Ubuntu 16.04, the touchpad worked once but after restarting, it failed to work and has not been working ever since.  This is output of xinput:   ↳ Elan Touchpad                            id=12   [slave  pointer  (2)]   In Mouse and Touchpad settings, the touchpad is enabled. What should I do to fix this? When is $A- B = B- A$? Hello I am taking a Discrete Mathematics course and having some trouble with this question about sets:  Under what conditions is $A- B = B- A$  Diagram:   Diagram:   Maybe I'm understanding incorrectly, but how can A-B and B-A be equal if they contain elements that are not in each other? Retrieve Voice Memos from device? iOS seems to refuse to allow me to email "long" voice memos, and I'm unaware of any way to extract them from iTunes backups of my phone. How can I retrieve entire voice memos that aren't really short?