FC2 and Firefox

[Jörn Hassler <joern hassler gmx de>]

Sorry for spaming the list with problems like this, but i have 
a strange problem with firefox and fc2.

After installing fc2 (i had fc2test3 before with no probs at all) i have
a problem launching e.g. firefox as normal user. i have no problems
launching it as root but as user.
I tried to install firefox via yum as well as from sources and always
had the same problem - there is no errormessage or anything else.
Even removing the .phoenix-dir from home-dir doesn't change anything.

Can anyone help me with this?

Thanks,

Jörn