MEGAMOUSE  from the Crystal Clear, the readme file tells how to get rid of SetAlphaValue

quote:

"If you want to delete SetAlphaValue, simply delete its folder in the /Library/InputManagers folder, where it was installed originally. If, on the other hand, you want to disable SetAlphaValue just for certain users on your Mac, move the SetAlphaValue folder from /Library/InputManagers to the user's home library (~/Library/InputManagers). If the user doesn't already have an InputManagers folder in ~/Library, you'll need to make one first. The InputManagers folder is one of the places Cocoa applications look when they launch to see if there are any additional attributes they need to take on... it's sort of a "plugins" folder for Cocoa."  
(Version 2.2.2)