Following up on the problems I reported above, I installed Java for Mac OS 7 (Lion) -- which is not included in the Lion installation. Unfortunately, this did not resolve the problems with Firefox layouts. Putting this out here for those who think Java may be the issue.

I am also having problems with Google Mail and Yahoo mail. Buttons are un-selectable and operations just time out. Seems like a major number of issues. In Yahoo mail when trying to check boxes to delete email - the box will not fill with the check. When opening some email all that opens is totally blank. Other email upon opening will download the text of the email (visible) with the timer circling endlessly.

Thanks

Thanks for the post. Have not seen the problem with Google Mail on my end, but I definitely see problems on Google Maps. Cannot toggle between map and satellite view, and location pin does not initialize.

Firefox 5.0.1 is unusable at this point, so I'm using Safari on a temporary basis until hopefully this problem is resolved.

Websites look wrong

https://support.mozilla.com/en-US/kb/Websites%20look%20wrong

Check and tell if its working.

Solved! The problem - at least on my end - was that the old version was cached. Thanks for the link. (FYI: I never had that problem on earlier Firefox upgrades. It only manifested itself when I upgraded to Lion -- after I had already upgraded to FF 5.0.1 on OS X 10.6.)