There certainly appear to be teething troubles, which may be rather unexpected as development versions of Lion have been available for a while. I have found many technical references to problems, and formal filed bug reports and a reference to a "Release Rapid Response Team - 10.7 Operating System " but I have not personally stumbled across much info from Firefox/Mozilla directed at end users of Firefox.

There are several other threads in this forum (there is also a contributors thread: /forums/contributors/707160 ) but that does not yet have any information likely to be immediately useful to you.

From what I did notice: it seems possible Lion could be associated with some Firefox crashes, and that some Lion features do not fully work with Firefox.

Thank you for your response. I hope this glitch is resolved soon. The main websites I use and manage are affected by this.