Automatically delete roaming profiles on workstations

If you're running a pre-Vista OS and have roaming profiles enabled you have probably noticed that Windows will cache those profiles on workstations. This is great if it's your primary machine as you don't need to download the entire profile every time you log in, but can be a real pain for lab style machines. If you have enough different logins your workstations can run out of disk space!
One of the solutions to this is to run Delprof. This is a Microsoft utility that will delete inactive profiles. A sample command line is

delprof.exe /I /Q /D:30

The above command will remove inactive profiles that are over 30 days old. Depending on the traffic on your machines you may wish to increase this value. But what is the best way of running this command?

I'd recommend deploying this using schtasks. This allows you to run delprof when the machine is idle - I've seen corruptions occur when delprof runs at logon or logoff, so this is probably a safer way. I run the following batch file on each workstation -

copy delprof.exe c:\windows\system32

schtasks /create /tn "Delete Inactive Profiles" /tr "delprof.exe /I /Q /D:5" /sc ONIDLE /i 5 /ru "SYSTEM"

Delprof is available from the Microsoft download center (www.microsoft.com/download/en/details.aspx?id=5405).