Newbie: Mozilla and Firefox windows "disappear" under FC3 2.6.11

[Clive at Rational <clive rational-communications com>]

Hi,

  From time-to-time a Firefox or Mozilla instance
under Fedora 3 will completely "Disappear". I have
looked through various logs to try and find some error
messages - but I find nothing. I am obviously looking
in the wrong place. All I want to know at this point
is where do I look for Firefox and Mozilla error
messages? Then next time the problem occurs I will add
the messages to this thread.

Thanks

Clive