I have little problem with my redmine, I'm logout any time I add 'category' or 'version' by the issue interface.
Sometimes, same problem after submit a new issue.
Here, my debian redmine version
Version : 1.0.1-2
ruby version: ruby 1.8.7 (2010-08-16 patchlevel 302) [x86_64-linux]
irb --version : irb 0.9.5(05/04/13)
THanx's for your help..