http://bugs.winehq.org/show_bug.cgi?id=19456
--- Comment #5 from Johan Gill johan.gill@gmail.com 2009-07-29 05:19:03 --- Created an attachment (id=22672) --> (http://bugs.winehq.org/attachment.cgi?id=22672) +mountmgr log with extra logging by me
mountmgr deletes the device entry for the volume, and then tries to access it.
Here's a log that shows the thing happening. I added some logging for clarity.