The key bit from his log is probably
#
fixme:shdocvw:ClOleCommandTarget_Exec Unimplemented group {000214d1-0000-0000-c000-000000000046}
#
0[103cf290]: file (null), line 0: uncaught exception: [Exception... "Component returned failure code: 0x8000ffff (NS_ERROR_UNEXPECTED) [nsIDOMLocation.href]" nsresult: "0x8000ffff (NS_ERROR_UNEXPECTED)" location: "JS frame :: wine:http://sms.gb.napster.com/duet/login/?ClientType=client&WMPVersion=10.0.0.3802 :: <TOP_LEVEL> :: line 21" data: no]
Looks like that wasn't from a run with ie6 or ie7 installed,
which is what I'd try next.
