I juste upgraded the RAM on my MacBook (1st Gen) from 1 gig to 2 gigs. I'm running Parallels 2.5 (build 3188). In the parallels "Memory" preference pane, the automatic "Adjust reserved memory" value is 512 MB. I don't think it has changed since the RAM upgrade. Should I increase the value? To what? Same question for my Windows XP VM. Instinctively, I want to double the memory allocation in both places. TIA for your insights.