I have an application with a very complex and 'hard' layout: it's a tab panel, with 10 tabs inside.
Each tab it's a border layout (with fittoparent plungin) with a north region very simple with some form field, but with a center region that contains 5 grids organized in a column layout (each column has a fit layout type in order to size correctly on the column).
Everything is mainly organized in a vieport.
I have the following problem: when i resize my browser window, everything is very fast under IE (version 8), but on firefox is tremendous slow, also with firebug closed.
I've already tried to reduce the number of rows on my grids with a paging toolbar, and I removed every not need nested panel or layout level.
Is that a common problem? There's really a tremendous difference between the two browsers, on Firefox is almost unsable.
Any suggestion will be appreciated.