Just installed this today, no problems so far with the sites I usually visit and it does appear to be quicker, unusual for M$?
Didn't like the menu bar being in the middle so found a fix on another site to put it back to the top:
Code:
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Toolbar\WebBrowser]
"ITBar7Position"=dword:00000001
Just exit IE7, paste the above text to a .reg file and import it then run IE7 again.