Hi Guys

Thanks for the answers:
I'm running BIAB quite comfortably on my Fujitsu U1010.
Specs: 1G RAM, CPU 800MHz, 60GB HDD, and using external 500GB drive for my realdrums & realtracks...also on Windows XP (SP3).

I only have the OS installed and BIAB, nothing else...all other services/resources I've turned off...

BIAB runs comfortably with up to 4 realtracks loaded...the problem is only when I change the chords or tempo and regenerate to an existing song