Hi any one installed SP 4 ?

Yes, we just installed SP 4 on our sql 2000 win 2k
server 2 days ago and since then it has been very
sluggish. Prior to the SP 4 upgrade sql took up between 1-
10% cpu, now it's continuously spiking in the 40-90+%
range and I can't figure out what's going on. The server
acts like its under some tremendous load, when it's
cleary not.

Any thoughts or suggestion on how to correct this are
welcomed.