twitter bootstrap thumbnails not aligning properly anywhere but Chrome + Windows
===

Ok so I'm prototyping a site for work and I have run into a small snag using the thumbnails as part of Twitter Bootstrap 

http://rlemon.github.com/dryermaster.com-prototype/links.html here is a link to the page in question. 

My issue is very easy to see and is applicable in every browser I've tested ***but*** Chrome 19 on Windows.  

If you goto the page you will likely see something like this: 
![enter image description here][1]
however When I check this on Windows + Chrome the thumbnails all line up properly (no whitespace on the second row on the left.) 

Here is the markup I used (I've looked it over thrice now and cannot see a mistake.. so i'll post it all incase it somehow is malformed?): 

    <ul class="thumbnails">
    	<li class="span3" id="c4">
    	<div class="thumbnail vcard">
    		<h4>AG Dryer Services, Inc.</h4>
    		<p>
    			<address>
    			234 N. Tyler street<br>
    			 P. O. Box 450<br>
    			 Elm Creek NE 68836, USA<br>
    			<br>
    			 Phone: 1-308-856-4636<br>
    			 Fax: 1-308-856-4641 </address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c5">
    	<div class="thumbnail vcard">
    		<h4>Advanced Grain Handling</h4>
    		<p>
    			<address>
    			823 Main St West<br>
    			 Mayville ND 58257, USA<br>
    			<br>
    			 Phone: 1-701-788-8927</address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c6">
    	<div class="thumbnail vcard">
    		<h4>Whitcomb Brothers Crane Service</h4>
    		<p>
    			<address>
    			16710 90th Ave<br>
    			 Atwater MN 56209, USA<br>
    			<br>
    			 Phone: 1-320-974-8337<br>
    			 Fax: 1-320-974-8837</address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c8">
    	<div class="thumbnail vcard">
    		<h4>Sims Construction Co.</h4>
    		<p>
    			<address>
    			1860 St Rt 56 SW<br>
    			 London OH 43140, USA<br>
    			<br>
    			 Phone: 1-740-852-4137<br>
    			 Fax: 1-740-852-4729</address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c10">
    	<div class="thumbnail vcard">
    		<h4>Elevator Services &amp; Storage, Inc.</h4>
    		<p>
    			<address>
    			312 W Main St.<br>
    			 Beaverdam, OH 45808, USA<br>
    			<br>
    			 Phone: 1-419-643-5111<br>
    			 Fax: 1-419-643-4762</address>
    		</p>
    		<a href="http://www.essicompanies.com" class="btn btn-primary" target="_blank">Website</a><a href="mailto:sales@essicompanies.com" class="btn btn-success">Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c12">
    	<div class="thumbnail vcard">
    		<h4>General Steel Crane &amp; Rigging</h4>
    		<p>
    			<address>
    			P.O. Box 1078<br>
    			 Hopkinsville KY 42241<br>
    			<br>
    			 Phone: 1-270-886-8857<br>
    			 Fax: 1-419-643-4762</address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c7">
    	<div class="thumbnail vcard">
    		<h4>Northern Grain Design &amp; Const.</h4>
    		<p>
    			<address>
    			8015 highway 7, SE<br>
    			 Clara City MN 56222, USA<br>
    			<br>
    			 Phone: 1-320-367-2881<br>
    			 Fax: 1-320-367-2879</address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c9">
    	<div class="thumbnail vcard">
    		<h4>Miller Agri. Sales</h4>
    		<p>
    			<address>
    			103 Sycamore<br>
    			 Friend NE 68359, USA<br>
    			<br>
    			 Phone: 1-402-947-9881<br>
    			 Fax: 1-402-947-9801</address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    	<li class="span3" id="c11">
    	<div class="thumbnail vcard">
    		<h4>Innovative Electrical Solutions. LLC.</h4>
    		<p>
    			<address>
    			11 W. Wilson<br>
    			 P.O. Box 202<br>
    			 Henning IL 61832, USA<br>
    			<br>
    			 Phone: 1-217-286-3280</address>
    		</p>
    		<a href="#" class="btn btn-primary" disabled>Website</a><a href="#" class="btn btn-success" disabled>Email</a>
    	</div>
    	</li>
    </ul>

and the bootstrap css file I have made some very minor changes (link colours and stuff with the tabs/background colours) but nothing to do with thumbnails or the grid system.  

Please any help would be appreciated, I'm really scratching my head here.  

  [1]: http://i.stack.imgur.com/YnlHC.png