If I have an applicatin divided into two frames,
they share the same session and one frame sometimes 
overwrites session saved by another frame (it usually happens with netscape).

Do you have any idea how to avoid this problem?

I tried to lock the session file after session_start()
and release the lock before end of my script, but I'm 
not sure if this is a good solution (and if it's,
maybe PHP could provide some function for session locking).

Any ideas?

Thanks,

Pavel