I created a Ubuntu 14.04 instance on AWS, installed apache2 (via apt-get) and wordpress and everything was working fine until I tried to attach an elastic ip address to it.  At that point I lost connection through http.  I can still connect via ssh and can ping the server, but upon further inspection, discovered the server is returning a 301 and redirecting to the old public dns name.  Where is this redirect coming from?  I have no .htaccess files.
I've got a Wordpress site on our home intranet that has run into trouble now that the IP address has changed - The index page loads, but not the CSS and I can't log in to the site administration panel.  Unfortunately I am a bit behind on backups. Is there a way to get Wordpress to refer to the new IP address?
What do I need to know about temperature and food safety? How should we cope with 12 month old waking in the night? We are trying to get our 12 month olds sleep routine improved now that both of us will be returning to work.  We've been working on getting the settling routine sorted out each night, and haven't quite yet got to him falling asleep on his own, but he does now settle quickly at the end of the routine in our arms.  We will be moving to trying to get him to settle in his cot soon.  Once settled he will tend to do about 3-4 hours in his cot before waking screaming.  When cuddled he will settle down in about 10 minutes and can generally be put back in his cot.  However often he will wake several times.  Last night he went down at 8, woke at 10, woke at 12, woke at 1am.  Each time putting him back in his cot.   At that point we gave up and brought him into our bed where he slept through to 6am.  When waking up he is often on either all fours or standing in the cot whilst screaming.  The main problem is that he's no longer sleeping "solidly" and will often poke and prod his mum in his sleep, and she therefore doesn't get a great nights sleep.  And with us both back to work we both need our sleep as much as possible. *.xhtml url-pattern causes java.lang.NullPointerException at com.sun.faces.context.flash.ELFlash.loggingGetPhaseMapForReading Question: For every polynomial $P(x)$ of degree at n we have $$\sum_{i=0}^{n+1}(-1)^i\binom{n+1}{i}P(i)=0$$  Well I was inducting on degree of the polynomial, for $n=0$ its true and I got a bit confused in the inductive step, actually I cant figure the inductive step.   Is this property (if true) a famous one?  Thank you for your help. How can I save the world from the spread of Hallow and Corruption/Crimson? After the Wall of Flesh, the Hallow appears and Corruption/Crimson spreads even faster.   Corruption/Crimson spreads through everything   Except Hallow  Hallow spreads through everything   Except mud (jungle) Except synthetic blocks like gray-brick  The results of Hallow and Corruption meeting are unpredictable   How can I stop them both permanently and effectively from taking over the world, considering both the top layer and underground?  (Eg, simply placing gray brick on top of the surface won't stop the underground spread?)  And, is it worth the effort? Upper bound on $\chi(G)$ for a triangle-free graph I'm struggling with the following question;     For every graph $G$ such that $K_3 \not\subseteq G$ (i.e. $G$ does not contain a triangle), prove that $\chi(G) \leq 2\sqrt{n} +1$ (where $\chi(G)$ denotes the chromatic number).   Any hints? I really cannot see the connection between the triangle-free nature of $G$ and a chromatic number being bounded above by $O(\sqrt{n})$. Running a 32-bit application in Debian Wheezy 64 bits: Missing libraries I want to play the game Aquaria in a Debian Wheezy 64 bits. The installation went ok, but when trying to play the game I get these errors:  ALSA lib conf.c:3314:(snd_config_hooks_call) Cannot open shared library libasound_module_conf_pulse.so ALSA lib control.c:951:(snd_ctl_open_noupdate) Invalid CTL hw:0 AL lib: alsa.c:1000: control open (0): No such file or directory Message: SDL_GL_LoadLibrary Error: Failed loading libGL.so.1   I have added 32 bit compatibility with dpkg --add-architecture i386 and I think that the required libraries are present in the system since typing locate libasound_module_conf_pulse.so yields:  /usr/lib/x86_64-linux-gnu/alsa-lib/libasound_module_conf_pulse.so  and locate libGL.so.1:  /etc/alternatives/glx--libGL.so.1-x86_64-linux-gnu /usr/lib/mesa-diverted/i386-linux-gnu/libGL.so.1 /usr/lib/mesa-diverted/i386-linux-gnu/libGL.so.1.2 /usr/lib/mesa-diverted/x86_64-linux-gnu/libGL.so.1 /usr/lib/mesa-diverted/x86_64-linux-gnu/libGL.so.1.2 /usr/lib/x86_64-linux-gnu/libGL.so.1 /usr/lib/x86_64-linux-gnu/fglrx/fglrx-libGL.so.1.2 /usr/lib/x86_64-linux-gnu/fglrx/libGL.so.1   However, it seems that Debian is ignoring them. What can I do to play Aquaria?  EDIT 1: ldd aquaria  linux-gate.so.1 =&gt;  (0xf77e1000) libSDL-1.2.so.0 =&gt; /opt/Aquaria/./libSDL-1.2.so.0 (0xf7748000) libopenal.so.1 =&gt; /opt/Aquaria/./libopenal.so.1 (0xf76fa000) libstdc++.so.6 =&gt; /opt/Aquaria/./libstdc++.so.6 (0xf760d000) libm.so.6 =&gt; /lib/i386-linux-gnu/i686/cmov/libm.so.6 (0xf75c3000) libgcc_s.so.1 =&gt; /opt/Aquaria/./libgcc_s.so.1 (0xf75b8000) libc.so.6 =&gt; /lib/i386-linux-gnu/i686/cmov/libc.so.6 (0xf7455000) libdl.so.2 =&gt; /lib/i386-linux-gnu/i686/cmov/libdl.so.2 (0xf7451000) libpthread.so.0 =&gt; /lib/i386-linux-gnu/i686/cmov/libpthread.so.0 (0xf7437000) librt.so.1 =&gt; /lib/i386-linux-gnu/i686/cmov/librt.so.1 (0xf742e000) /lib/ld-linux.so.2 (0xf77e2000) How to deal with hierarchical / nested data in machine learning Is gravity just electromagnetic attraction? Recently, I  was pondering over the thought that is most of the elementary particles have intrinsic magnetism, then can gravity be just a weaker form of electromagnetic attraction? But decided the idea was silly.    But I then googled it and found  article. Is this idea really compatible with other theories as the article mentions? Is there any chance of this proposition being true? Use Cauchy-Schwarz inequality to show series convergence JAXB Java generating XML, Why lowercase? I'm a little confused as to whether I should install Ubuntu on its own partition on my hard drive, use VirtualBox or another virtualization package to install it, or use Wubi to install it directly on top of my current OS (Win 7). I definitely want to learn and use Ubuntu, so this is not just for playing around with it.   Also, if I choose to partition, should I partition the hard drive myself or should I let the Ubuntu installation menu do it for me? I understand that I am going to need a main partition, for Ubuntu's core components, and also a swap partition. Then there is the option to add a partition for "home"- I don't understand what combination of these partitioning options I should choose, or whether it is better to partition in Windows before I install Ubuntu or just partition my hard drive when I install Ubuntu itself I have written an essay last year, as a personal exercise. I now have a course at uni on the topic and could basically just hand in this essay now, the topic fits perfectly. I have also never submitted this essay to any other course or so.  Could I just hand in this essay, or would I violate some rules with that? Is this maybe already self-plagiarism? What really allows airplanes to fly? Wacom Graphics Tablet CTH-480 / CTL-480 Not Detected In Ubuntu 13.10 When to answer vs when to just comment How do you know if something you want to say should be an answer or just a comment?  I assumed that anything that answers the question should be in an "answer" field, and clarifications should be under "comment". But I found this question () in the English Stackexchange site.  The original question asks for words related to the word "chain" and all the answers so far were provided via comment to the original question, instead of in a separate answer field.  Is this the recommended way to answer a question that requires only one-word answers? Or should the comments to the original question be converted to answers instead? Define a mathematical set Let $x,y,z&gt;0$: Prove that:   $\frac{1}{(x+2y)^2}+\frac{1}{(y+2z)^2}+\frac{1}{(z+2x)^2} \geq\frac{1}{xy+yz+zx}$  I tried to apply Cauchy - Schwarz's inequality but I couldn't prove this inequality! When you review papers submitted for publication, is there an “optimal” length for reviews? In my experience as an author and referee, I have seen a large range of review lengths (for reference, a paper in my field is typically between 3 and 8 printed pages):   Zero length: for some of the papers I have authored, the reviewer just clicked the “accept as is” or “reject” checkmark on the review sheet, without adding any comment (at least, not any comment visible to me). It's not so common, but it has happened. Short length: a lot of time, I received reviews who consisted of a single paragraph. Medium: one full page, maybe two pages.   Although I have never received any such long reviews, I have myself written on a few occasions reviews that exceed two pages, including once or twice a four or five-page review.  These were cases where the paper was good, but could be (in my view) much improved and some of the aspects/consequences had escaped the authors' consideration.  I am wondering how useful reviews of various length are to editors. I often consider that “unmotivated” reviews are useless, as they do not give any real insight about the paper to the editor. For example, if the editor gets two conflicting non motivated reviews, how is she to decide?  On the other hand, although I write some from time to time, I have never received long reviews, so… is this something frowned upon? I am curious how people picture geometrically how the covariant derivative acts with regards to vector fields. I understand that it is merely an object which has been defined for some use and obeys certain conditions but how would you picture such a thing geometrically? In other words, when someone asks you what the covariant derivative is, how do you explain it in absence of a formal definition?