You shouldn't be having those problems, so I would suggest having the mac looked at. It could be bad directories (fix with Diskwarrior) or worst case a mysteriously messed up system. If you don't want to figure out what the problem is, the easiest solution is an "Archive and Install" which will replace your system with a fresh one, while leaving your user files intact. A few applications that have critical features stores in the system folder may need to be re-installed (Photoshop and printer/mouse/tablet drivers), but that should leave you good to go.
The old system will still be available for finding lost files (not booting) at your HD/Previous Systems.
I am very confused. So I got Vista last night, and I was expecting to have to wrestle through all kinds of challenges based on what you have been saying in your pod cast. and it was the smoothest install I have ever gone through. It took less than 30 minutes to complete and came right up problem free, and my machine is not ancient, but is by no means the latest and greatest. I had a lot of doubts going into the upgrade, but have been pleasantly surprised with what I have discovered so far. Meanwhile, my Mac that I use at work has recently started to have all kinds of ?issues? everything from intense slow downs to outright system crashes. I have to reset my machine at least once a day. I was really excited when I started this job and found out I was going to be getting a Mac because I had always wanted to use one, but it has turned out to be by far the worst machine I have owned in the past five years. Is just me, am I just that unlucky that the system I want to use keeps crashing when it is supposed the more stable one, and the one I have mixed feelings about performs better than expected? what is going on?