Not quite as extreme, however since I've installed IE7 beta 3, I now can't access an internal website which is run on IIS6. I got out the old packet sniffer and discovered that IE7 doesn't actually respond to the authentication header it gets sent back:
And so IE7 just says it can't find the server (I think it's being creative with the truth).
Also since I installed, my valued Photoshop 6 now hangs at startup.
Why don't you just uninstall you winging pom, I hear you cry! Well, I tried this, restarted the machine (no errors or anything) and was left with an IE6 that was broken, continously complaining about a preview.dlg. I tried a restore point but for some reason
the restore point system still gives me IE7.
Help! Any suggestions? Can I force IE6 back over the top without having to do a complete re-install?