I've been using Internet Explorer 7 as my primary browser for about 6 months now (various beta versions). I've always been an IE fan, dating back to version 4--, actually preferring it over the various Mozilla flavors. This probably has a lot to do with the fact that most of my clients standardized on IE, so any web application that I developed was targeted for that single platform.
I only had a few minor problems with the beta versions of IE7, so my experience has been excellent thusfar. Yesterday, I downloaded and installed the RTM version.
Perhaps it is simply a coincidence, but I've been noticing some weird problems now with my laptop. For instance, it goes into sleep mode when I close the display. More than once now in the past 24 hours, upon waking up, the laptop does not show the login dialog--just the wallpaper and mouse pointer. The only thing that I seem to be able to do is power down and reboot.
Also, more than once, the browser has just seemed to stop responding for 1-2 minutes. It doesn't allow me to switch tabs, or scroll.
I don't want to just blindly blame the RTM version of IE7 for these problems, but I find it strangely coincidental that they started after I installed this most recent update.