apache2&php

I was moving my server from redhat to suse and now some problems occured

I have 2 virtual hosts www.1host.com and www.2host.com. Their frontpages and
static html pages are displayed correctly. But php pages arent displayed at
all, I press the links and nothing happens. No errors in logs.

But in users home directories (www.1host.com/~user) php works nicely...

In 1host.com phpinfo() works. It shows Virtual Directory Support = disabled.
Does this has smth to to with apache virtual hosts?