OK, new development, I get a blue screen of death in windows 7 64 using shareport after two hours.  I have been using windows 7 64 bit for almost a year now, (betas and RC and now retail pro), and have never had a single crash or lockup during that time.  This is a pretty fresh install, (installed retail version in January), so I don't have alot on my system.  This program is going into the folder 13 until this gets figured out.  Hopefully there will be a response from a dev or something on this matter.  
I can supply crash logs and memory dumps as well if needed to the devs upon request....