Firefox slow and unresponsive with facebook and zynga and then locks up for all other tabs open

Question

I finally had to uninstall the beta 4 version as I couldn't take the issues any longer. The browser would become slow and then totally unresponsive mostly when using facebook and zynga. however, all tabs would become slow and unresponsive and would have to be rebooted. It wouldn't be 5 minutes and it would have to be done again. Even without facebook/zynga loaded in a tab, the entire browser is unbelievably slow. I am running mac os x 10.5.8.
I went back to the old version until I hear back as I just don't have time to sit and wait and wait and wait only to have to reboot the program constantly.

Answer 1

I found a "work around". I installed Incredible Bookmarks 0.7.3. That allows me to add an additional Bookmarks Toolbar without causing the bouncing problem.
Putting bookmarks in the IB bar was a little tricky. It allows customization, but only to the extent of choosing bookmarks by topic or by a subdirectory of the Bookmarks Menu. What I actually put on the toolbar are such subdirectories (or folders), so I normally could only put one at a time. (This problem doesn't exist with the Firefox Bookmarks Toolbar, which allows you to copy subfolders, not just individual bookmarks).
I solved the problem by moving the additional folders I wanted to put in the IB Toolbar into a folder I (cleverly) called "IB Toolbar", then selected that for the actual Toolbar. The result: a row of folders, exactly what I wanted. (Actually, it's a second row of folders, since I still have the original Firefox Bookmarks Toolbar.)
I'd still prefer MultiRow, but that doesn't appear to be working with Firefox 3.6.18 and higher, so until I upgrade to Firefox 5 (and see if the Plus version will work) this will have to do.