Redmine: 500 Internal Server Error Content-Type: text/html

Hello!
I have a such problem in my redmine app, like "Redmine: 500 Internal
Server Error Content-Type: text/html " error, from time to time, and
there is no periodicly matches.

Versions:
Rails - 2.2.2
Ruby - 1.8.5

Thx, for you answers.

What’s in your log files?

All is ok now! I’ve just restarted mongrel claster & updated ruby &
rubygems.

And I think, that my hoster need to install a mod_rails.