The wine drive C: situation is an unresolved bug associated with the behaviour of the Application launcher and the command specified for the "Browse Drive C:" icon installed by Wine: https://bugs.launchpad.net/ubuntu/+source/wine/+bug/223989 there are many Ubuntu/Kubuntu threads with queries ever since around 2008, I found possible fixes in: http://kubuntuforums.net/forums/index.php?topic=3114133.0 and http://ubuntuforums.org/showthread.php?t=1329802 but perhaps it would be better if the "Browse C: Drive" icon were removed from the wine install. It only gives access to the C: drive for the default wine prefix and you have to use winetricks to change the prefix to get at the C: drive for any application installed under a different prefix. The practice of installing each Windows Application in its own prefix may make operating sense but it is the hardest thing I have to explain to newbies for whom I install Linux. Also I do wonder what happens if I try to run two windows applications at the same time which are installed in different prefixes and therefore refer to separate C: drives. Not actually tried this yet ... what am I likely to see?
