Redmine

Hello,

we have a problem with our Redmine. It´s very slow, for every new site it has to load 2-5s although it´s laying on a virtual server in the network.
We use Redmine 1.1.3.stable. The virtual server is an ubuntu 10.04.2.

Did anybody know the reason why? The virtual server is ONLY for redmine and the load is very low.

EDIT: this is since we installed it in may last year with the newest version (1.1.3).

Thanks for your help.