Pegasos 1 is Okayish, but its Greatest Achilles-heel was the northbridge chipset, before laying out serious dosh, I'd find out from the seller (Yes i know its ebay) what VERSION it is.
The MAI Logic Northbridge has SERIOUS bugs, LATER versions had a bugfix (Called "April"), and then "April 2". The bugs were related to RAM and DMA ? i believe.