Lanny Marcus wrote on Sat, 18 Apr 2009 08:12:48 -0500:
Apr 18 01:10:00 xenmaster kernel: BUG: warning at drivers/ata/libata-core.c:4923/ata_qc_issue() (Tainted: G )
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What do those BUG warnings mean? (Tainted: G) Those appear various times, in the messages you posted. That driver has a problem?
I think "tainted" means it's proprietary, non-GPL driver. Don't know what the "G" means, looks a bit like there have been some characters cut off.
Kai