According to crimson on #-devel the following patch causing the problem:
http://www.kernel.org/git/?p=linux/kernel/git/bcollins/ubuntu-dapper.git;a=blobdiff;h=4b23a037222ea29396a4cbf55db2cce7d02572c9;hp=e3b92013b986e8cef87bc53947b4254ae95b51e8;hb=4662bde2ba780e63992926a88f556bde086820a1;f=drivers/scsi/libata-core.c
According to crimson on #-devel the following patch causing the problem:
http:// www.kernel. org/git/ ?p=linux/ kernel/ git/bcollins/ ubuntu- dapper. git;a=blobdiff; h=4b23a037222ea 29396a4cbf55db2 cce7d02572c9; hp=e3b92013b986 e8cef87bc53947b 4254ae95b51e8; hb=4662bde2ba78 0e63992926a88f5 56bde086820a1; f=drivers/ scsi/libata- core.c