I have a macally ioptiJr (small usb mouse) connected to a usb hub connected to my pismo;
since upgrading from 9.0.4 to 9.1 my mouse clicks do strange things;
it seems that sometimes (manytimes) the clicks are captured not only by the frontmost window, but also by other windows/other apps;
for example, I'm selecting some text in PageSpinner and when I release the mousebutton FirstClass comes in foreground w/ a new message window;
sometimes it happens and sometimes not; I've not identified a pattern for that; guess it's a bug in 9.1
btw, my mouse is driven by the Macally USB Mouse/Trackball driver.
Should I go back to USB Overdrive?