Windows 7: Random User Home Drive / Printers Disconnecting - Help

Hello All,

Recently purchased Dell Windows 7 Pro PC's.

Our Network is Server 2008 AD / DNS / GP etc replicated to Server 2003

We have a problem were randomly a users Home drive (set in AD) and / or network printer (printer server = server 2003) disconnects. Try clicking on the disconnected drive and a H:\ drive is unavailable message appears. Though other mapped network drives can be accessed???

Only way of solving this is to log off and on.

When the problem has occured and the user logs off, the unable to syncronise roaming profile message comes up. Note this message appeared with a user we put on local profile as a test??



I am thinking / tried the following as the problem:

Windows 7 Firewall
Group Policy Settings
Roaming Profiles (I dont think this is the problem)

Though as i've just written this a user has had the problem again. Firewall was off, roaming profile on, No GP applied. The home directory, roaming profile and the printer sit on the same 2003 server. All other servers can be accessed apart from this rouge one. Though the rouge server cannot be accessed by its netbios name, it can be accessed via its FQDN and IP.

Is there a known problem with using netbios names and should ne using FQDN, or at least making the reference in the clients host file?

I appricate all comments, thanks.