Have you seen these messages in your console log?
10/5/09 9:04:37 PM kernel SCSITaskUserClient – Invalid arguments: scatterGatherEntries = 1, requestedTransferCount 0, transfer direction is 0
10/5/09 9:04:38 PM kernel SCSITaskUserClient – Invalid arguments: scatterGatherEntries = 1, requestedTransferCount = 0, transfer direction is 0
10/5/09 9:04:39 PM kernel SCSITaskUserClient – Invalid arguments: scatterGatherEntries = 1, requestedTransferCount = 0, transfer direction is 0
10/5/09 9:04:37 PM kernel SCSITaskUserClient - Invalid arguments: scatterGatherEntries = 1, requestedTransferCount = 0, transfer direction is 0 10/5/09 9:04:38 PM kernel SCSITaskUserClient - Invalid arguments: scatterGatherEntries = 1, requestedTransferCount = 0, transfer direction is 0 10/5/09 9:04:39 PM kernel SCSITaskUserClient - Invalid arguments: scatterGatherEntries = 1, requestedTransferCount = 0, transfer direction is 0
This error has been seen with Retrospect, Parallels, and I believe in Roxio Toast 10...It seems to be related to DVD/CD rom access, but I have not found any official recognition of the problem. Â It's been reported in Mac OS X 10.5 (Leopard), and 10.6 (Snow Leopard).Â
One potential solution is to disconnect the CD/DVD drive in Parallels, or Retrospect.