Hello, Today I upgraded PHP (4.4.1 -> 4.4.2) and MySQL (3.23.x -> 4.1.15) on my Fedora Core 2 server and restart both the MySQL and Apache webserver. All seems to work (I run several vhosts on this server) except that OTRS seems to have lost it. When I go to /otrs/index.pl the login screen appears, but when I login I get 'Connection closed by remote server'. I've looked all over but have found no error message whatsoever. /var/log/messages says (I put in x's for private data): Feb 18 19:14:24 xxxx OTRS-CGI-1[24835]: [Notice] [Kernel::System::Auth::DB::Auth] User: xxxx authentication ok (REMOTE_ADDR: xxx.xxx.xxx.xxx). Also the DB is alright according to OTRS: # /opt/otrs/bin/CheckDB.pl It looks Ok! And restarting the otrs service doesn't help or seem to find any problems: # service otrs restart Shutting down OTRS Disable /opt/otrs/bin/PostMaster.pl ... done. Shutting down cronjobs ... done. Final shutdown of OTRS.. done Starting OTRS.. Checking httpd ... done. Checking MySQL ... done. Checking database connect... It looks Ok! done. Enable /opt/otrs/bin/PostMaster.pl ... done. Checking otrs spool dir... done. Creating cronjobs (source /opt/otrs/var/cron/*) ... done. -->> http://xxx.xxx.xxx/otrs/index.pl <<-- Final start of OTRS.. done Other Perl-based webscripts (such as Movable Type) are working correctly. What could be the problem? Where can I look? Thanks, Nils Breunese.