Server 2003 Terminal services error 1500

Hi,

I have SBS server 2003 installed with terminal services role installed. There is one user that get the error message,

windows cannot log you on because your profile cannot be loaded terminal server 2003

DETAIL: There is not enough space on the disk.

I have checked all hard disks and there is plenty of space about 60gb for each disk.

This happened once before and all I did was delete their old profile and recreate it, but 3 weeks later i get the same problem.

The profile is about 6mb and there are no disk quota's on the server or through GPO.

Any ideas would be great..

Thanks