When I view Paragon_Market/Sales I get table-mashes. This occurs elsewhere too.
Windows 7 64bit Firefox latest
(https://i409.photobucket.com/albums/pp175/sintao/titantableglitch22may2012.gif)
It's an intrinsic issue for wide tables with fixed-width cells, please post any others you find as they'll each have to be handled on a case-by-case basis.
The solution is that in addition to specifying the width as a percentage (in this case 80%), the table also needs to have a min-width specified in ems.