Jon Clark wrote: > > I was wondering if anyone else had experienced similar, and more > importantly if they found a cause and solution. (I have seen in the > list archive a similar problem reported, but the solution was to swap to > a PS/2 mouse. I do not have enough PS/2 mice to replace all of our USB > mice, and this does not help a user wanting to use a USB stick drive etc.) About experience only. Sometimes I experience a system hang during boot for unknown reasons. I have a Microsoft USB mouse but connected via a converter to a PS/2 port. This behaviour is rare to very rare. I am not sure of its cause though (in fact I haven't noted down after which service it hangs, so as to track it down, because it is rare.