For what it's worth - ITunes
 

For what it's worth, I noticed that you have ITunes installed. I was having some big time problems with compatibility between Vista and ITunes. I had to keep deleting the lower and upper filters in my registry in order for my CD/DVD player/writer to work. I was having some sluggishness problems too. I finally gave up and just deleted ITunes altogether and everything is working fine for me now. You might try deleting ITunes or at the very least go in to your registry and do a search for "lowerfilters" (one word) and deleting them and do another search for "upperfilters" (one word) and deleting those. You will need to restart after you do that. I heard a rumor that Apple was working on a fix for that and that they were close to releasing something. I haven't checked to see if that has happened. Good luck.