http://bugs.winehq.org/show_bug.cgi?id=24579
--- Comment #43 from David davidsboogs@gmail.com 2012-01-02 20:47:31 CST --- I did report my distro, Kubuntu 11.10 amd64, it's right there in the top of my last comment, and it's as up to date as it can be short of beta testing 12.04. (I'm even running KDE 4.7.4 from the PPA since it's not yet in Updates)
Steam was not busy either, it was just sitting there at the library screen not even downloading anything.
Also, this is a fast new PC: Intel i7-2670QM 16 GiB ram Nividia GTX 570M (1.5 GiB video ram) OS is on SSD (although my home dir and therefore Steam is not)
I also just tested in a new clean profile. It was in fact worse. (Again, just sitting at the library, not busy)
Obviously this bug has always had a spotty repro rate, but as long as it isn't fixed for everyone it's not fixed.
By the way, are you trying it with a real mouse instead of a touchpad? that might help you see the issue.