I was wondering why gpugrid was receiving 4 files but all of a sudden had no units running.
So i looked at your account and see this :

541514 391528 18 Apr 2009 7:18:30 UTC 19 Apr 2009 8:03:23 UTC Over Redundant result Cancelled by server 0.00 --- ---
541505 391522 18 Apr 2009 7:14:35 UTC 23 Apr 2009 7:14:35 UTC In progress --- New --- --- ---
541504 391521 18 Apr 2009 7:14:35 UTC 18 Apr 2009 16:47:04 UTC Over Redundant result Cancelled by server 0.00 --- ---
541041 388834 18 Apr 2009 4:53:29 UTC 19 Apr 2009 3:02:36 UTC Over Success Done 1,497.56 3,843.30 4,804.12
531599 386420 16 Apr 2009 1:50:01 UTC 16 Apr 2009 22:19:12 UTC Over Redundant result Cancelled by server 0.00 --- ---
531594 383707 16 Apr 2009 1:50:01 UTC 18 Apr 2009 4:52:49 UTC Over Redundant result Cancelled by server 0.00 --- ---
527396 383975 15 Apr 2009 1:03:25 UTC 15 Apr 2009 11:17:33 UTC Over Redundant result Cancelled by server 0.00 --- ---
522551 373358 16 Apr 2009 1:49:24 UTC 18 Apr 2009 4:52:09 UTC Over Success Done 1,579.13 2,883.44 2,883.44

Now if i remember it right some of them where allready running