Opps! I keep forgetting about that.
Thanks. It's amazing to me that you guys at these formums know all that stuff.
I can recall now that i did catch on that as i moved up the OS chain my poor old mac of the day gradually slowed down as each OS required more and more RAM and in those days AppleRAM was not cheap. However i did squeeze out that 8 MB of memory that Mac had by using different startup sets using ConflictCatcher because VirtualMemory did not get along with midi/audio programmes. Well that's my short trip down memory lane today.