Problematic Progreams
There are some programs do things that might not work inside a V-Server.
Usually on the program needs special rights which are not permitted by default in V-Servers.
Usually needs rebuild the program without capability to solve the problem. On debian system, it's simple to rebuild a package without capability.
$ apt-get source bind9 $ cd bind9-9.3.1/ $ vi debian/rules
Add --disable-linux-caps option right after the ./configure
eg: ./configure --disable-linux-caps --prefix=/usr \ Build the binary package $ fakeroot debian/rules binary
Above are just example, please see more details on: