For the past few weeks I have been having some performance glitches with the way my mouse interacts with my Linux machine. The mouse would move and the buttons operate normally except for when trying to press and hold the left button for example. The action would appear to terminate after a few seconds and reinitialise. This behaviour was making it impossible to move windowed applications around the desktop. Today however I have solved the problem, which is good from the point of view that it solves the issue and also it means I don't have to spend the next 48hrs recompiling Gentoo and all my applications.
The fix is a simple one. x11-drivers/xf86-input-evdev-2.3.2 was causing the problem, x11-drivers/xf86-input-evdev-2.4.0 solves the problem but is marked as unstable at time of writing. The upgrade from xorg-server-1.6.5-r1 to xorg-server-1.7.6 seems to have been the reason the evdev driver wasn't working as expected, possibly handing the input devices slightly differently from the previous version.
I can happily say the rodent has ceased to be confused.