[Flightbase]

Just upgraded to vb 4.1.7
As in 4.1.0 PL2 image uploads do not work at all. In 4.1.0 PL2 some usergroups could not upload, now everyone using firefox can upload. IE, chrome, Safari and Opera are not working, getting the error:

Sorry! We could not process your edit due to a loss of session data. Please try again. If it still doesn't work, try logging out and logging back in.

I tried the common fixes like:

Check if /var/lib/php5 is writable and not readable for user and world ( # chmod 733 /var/lib/php5 )
Check to see if your session.save_path value in php.ini is valid and writable to the webserver - PHP configuration.
Check to see if there is enough disk space.

After making changes restart Apache:

/etc/init.d/httpd restart

If you use memcached and enable $wgSessionsInMemcached, make sure that memcached is really working.

Any tips, why FF ist working, all other browsers don`t?

greets, Nik