After installing horde, (with all it's modules), I can not create anymore manualy virtual servers on apache. It doesn't give any error message, and after refresh, the new virtual server does not appears. By creating new domain in automatic process, it works normally. Can somebody help!

Thanks

Did you check out your apache conf and see if anything is getting put into it when you manually create the servers?

Sounds bug-like. As kato notes, we'd want to see what's happening in the actual configuration file (if anything). I would guess the Apache module is getting confused by something that the Horde installation added.

Configuration file does not changes too.
I also uninstalled Horde (all modules), but problem remains!!