Making Room to Run!
Sometimes programs use resources that are either hogged or restricted by other programs. This is fine if you can get past the graphics and tell Zone Alarm that your new Quake X engine is allowed to impersonate a server. However, if the graphics freeze up as they can when controlled by the blocked program, it can be difficult to tell what the problem is. Often it is a matter of there not being enough memory to go around all those programs sitting idly in memory with their icons crowding the System Tray on the right hand side of your task bar, when along comes a truly demanding application - and the operating system goes down.
Did the program you just tried to start really freeze, or worse still, crash the operating system, or was it one of the residents idly occupying valuable system resources? One can never be sure where the problem lies unless intensive programs are run without competitors for system resources. By using Clear-It to close all applications and TSRs before you run any particularly demanding software, you can confirm or rule out the possibility of inter-application conflict.