ALAX 11,
Don't know what to tell you. Surely someone else will chime in that has maybe seen "PULSING TO0 FAST" and can give you specific information. Don't recall any posting like yours since i have been following the postings.
Is the pc a dedicated one for use with Mach?
Have you tried optimizing it?
Do you have any software, anti-virus, QuickTime, etc on the PC?
What Mach Version are you using?
As far as Mach having many problems,....there are thousands of users who don't have "many problems"
and make a living based on using it.
RICH