Delete cache for Terminal service client home folder

Hi there,

I have problem here with my disk quota management. Currently couple of users
are accessing my terminal server box which these users profile are mapped to
their indivdual home folder on another box called X.

These home folders reside on the E:\ of X. And on E:\ i had set quota limit
for these terminal service users a max limit of 100KB. Apparently when these
terminal users logged in, cache will be generated and before long, they have
hit the quota limit. They will experience error like disconnection.

My question is
1) Is there a way like policy to auto delete the cache or,
2) If i were to increase the max quota, what size is appropriate?

Thanks and appreciate.

Alvin Quah