Here's some input from a few people on irc:
<hordak> hitachi47/xtreme2.4, hitachi59/xtreme2.3, hitachi59/ixtreme1.2r2, hitachi47/ixtreme1.2r2, ms25/ixtreme1.2rc
He was playing cod4 with 5 friends and they all got banned at the same moment. (signed them off) and those are the drives/revisions.
<purbeast> ms25/x5.3
Also, i would like to note that even though some of these people had older fw's, they only used stealth discs. The 5.x can be dismissed on hitachi, as it did not handle dmi/pfi inquries properly, but the ixtreme revisions should be taken very seriously.
We'll get a chance to see if there's anything new going on via logging later tonight. I'll keep this posted.