Thanks for the swift reply, here's the info from my host:
Current PHP version: 5.3.10
safe_mode = OFF
memory_limit = 80MB
upload_max_filesize = 96MB
post_max_size = 96MB
max_execution_time = 50 sec
For image processing we offer GD2, but not ImageMagick.
Full details on One.com's PHP configuration: http://www.one-docs.com/php5
Be aware that you cannot change the PHP configuration, except for register_globals and display_errors which are deactivated per default, but can be activated in the control panel.
MySQL version: mysqlnd 5.0.8-dev - 20102224 - $Revision: 321634 $
max_user_connections = 24
max_allowed_packet = 16 MB
Further details on MySQL variables: http://www.one-docs.com/mysql
As far as the other questions are concerned;
- Did something change on the webhost? No
- Did you install anything just before you got the problem? Nothing was installed, I was only uploading pictures for each class and then creating new galleries before uploading new pictures and suddenly it all stopped working.
- Does a reinstall of RSGallery2 fix things? (You will want to have a backup before any major changes, like (re)installing componentes!) I even did a downgrade to 2.2.0 nothing changed and only for that specific page all teh rest works just fine.
- Does it happen with different browsers, e.g. Mozilla Firefox, Internet Explorer and Safari? Yes I tried all of them both on Mac and PC
If this only happens in the backend with the galleries, and you need to add galleries quickly, you could use the frontend My Galleries. Is that somethin I should install additionally, because there's nothing like that in my pages.