Random interruptions

[uncl_nigel]

New incident type - this time the music carried on playing but the windows on the Mac screen were flying left to right and back at high speed! Occurred around 9:45-9:55

I had open Safari (on this forum), Finder and Minimserver (in the background) when I chose "properties" in the MS dropdown it opened something and everything started whizzing from left to right and back - it took quite a lot of attempts to click on the Finder to stop the phenomenon!