More generally, I've been reading up on security issues lately (specifically Windows related). I've now come around to the idea that it's not a good idea to be logged in all the time with full admin rights - that way, if you get a virus or spyware, there's a limit to how much damage it can do. That's mainly a good guideline for "normal users" rather than experts, but as a developer it's a good idea to "eat my own dogfood" - the idea is that if I run my apps with limited permissions while I'm developing them then it means I know they work properly in that environment, rather than me releasing it and then saying "Hmm, weird, it worked fine for me..." QuickBooks is a prime offender here, since it requires you to have full admin rights over your PC. Anyway, one week later (at home and work), and so far so good - a couple of minor problems, but nothing major. I'll give periodic updates once I've been doing this for longer.
The other security-related thing is my new shiny thing: a biopod (fingerprint recognition as an alternative to typing a password). I haven't actually installed it yet, but I have high hopes for it.