Sidebar dropping down below main content on FF 3.6.3. on XP ?

This is a funny one because someone has told me on one machine - a Windows XP with FF 3.6.2 and then updated to 3.6.3 - the sidebar dropped below the main content box on my site http://robcubbon.com

This guy has tested it on other PCs with other Windows in FF and it's fine!!!

So there was only a problem on that one machine. It seems to be OK on all Mac browsers and on all browsers in Adobe's Browserlab.

If anyone on a PC could take a look on FF or suggest what the problem could be that would be great

 

Hi

Checked it on Windows XP machine running FF 3.6.2 and it works fine.

 

Thank you, Mark