I'm running MT 3.2 free edition with two blogs without any problems. The whole thing is based on Berkeley DB with some 1100 entries overall. Now I wanted to add a third blog and the trouble started:

I'm getting '500' server errors when rebuilding individual archives (always) and index templates when there are more than two of them active that contain MTEntries tags. When I deactive e.g. atom and RSS the remaining index templates rebuild fine (But still not the individual archives). The first two blogs still work fine. Sounds strange? To me, too.

This is reproducible on all new weblogs I create in this MT installation.

I then created another installation of MT on the same host in another directory and I don't get any errors there with three or four blogs (without entries, though).

Any ideas what to do? Or similar experiences?