We are experiencing an issue with users loggin on, and having most of their drives mapped via a login script correctly, however their personal netowkr share sometimes taking up to 5 minutes to appear. obviously this is causing havoc in lessons when students are unable to access their work.

Has anyone else experienced this, and if so can you please point me in the direction of the cause?

We are running Windows 7 enterprise under a Server 2008 domain