As said, everything works well and without no problems compared to vista a year ago.
There are still reasons to stick with XP: some important software is deeply built into my xp registry and synchronizes the copyright values online with any use of the software. It works only on XP.
Further reasons are more complex, but are connected to my router connections ...so don't ever the xp ^^
Edit: and there is no Ethernet driver for my board yet. ...flopped