I have a 2010 MBP Core 2 Duo with 8 gigs of RAM. I was originally running VMWare Fusion and Windows 7. For reasons unknown, it started to act extremelly sluggish. I tried switching to Parallels, because it works great on my 2011 MBP, but now I have speed problems PLUS a whole lot of broken features from switching from VMWare. Is there a good guide on wiping and reinstalling everything somewhere?