Disclaimer The opinions expressed herein are my own personal opinions and do not represent my employer's view in anyway.
Darryl and others have mentioned recently about the impending doom that is IE 7 :] If you are like me and decided not to use it - for one reason or another - then beware that it is very likley to be automatically installed on your favourite computer weather you want it or not.
Now, dont get me wrong, I like IE7 but during the early betas I had an issue with it and Visual Studio Team Suite so I haven't used it on my work machine since then. I do use it at home though and it works fine, but from a user POV I don't think it works any better than IE6. From a dev POV I've just realised that I haven't done any testing on my sites (personal or otherwise) so I should probably stop blogging and get testing!
Anyways, my main gripe is that this is rolling out as a critical (or at least high priority) update so most users will get it without asking for it. I can understand the justification for doing this - it does fix a lot of potential security issues so it would fall into that category - but I can see this causing some problems for a lot of people.