Might be too late, but I own a free mud hosting service. Been running it for a while now on a fairly powerful server.
www.themudhost.net
Dual Quad-Core AMD Opteron 2.3 GHz CPU's
16GB DDR2 667 ECC Memory
RAID1 Array for Operating System and RAID5 for Data
I try to give my users anything they need. Space is not an issue.