You’ve done the upgrade to Internet Explorer to version 8, but you see a sharp slowdown when opening the browser and the level of the tabs (see crash the browser). All suspected infection is excluded, there is a procedure to address this problem.
It seems that this latest version of IE has its own system of protection against malicious sites. It is also what some anti-spyware. Therefore, there would be conflict in protection (including the hosts file).
This would also be a file system “badly stated?
Close your browser and all applications before you proceed throughout the manipulation.
(In Vista, disable UAC before)
1st STEP
* Download the file “DelDomains.inf”:
o Right click here and select “save target as …” and save “DelDomains.inf” on the desktop.
* Right click on “DelDomains.inf and choose install.
Then click on “Open” and laissez faire.
2nd STAGE
* Open the “Run”:
o Go to “Start” then click the “Run”.
o Or press the “Windows” and the “R”, the box “Run” will open …
* In the input box, type this exactly ? cmd and then press [Enter].
* A command prompt window (DOS) opens:
o Type exactly this regsvr32 ? actxprxy.dll and press [Enter].
Windows opens a window (RegSvr32) then click “OK.”
And finally, type exit in the command prompt to exit.
Now restart your PC for the changes to take into account and re-test Internet Explorer. Normally this should go much better! … 
i find that IE8 is more stable compared to the previous versions of Internet Explorer, i am pretty much happy with IE8
Internet Explorer 8 is superb in my opinion. this browser has been very stable on my PC even if i open 30+ windows at a time when multi-tasking.
Internet Explorer 8 looks very very stable to me. i can open as much as 20 tabs simultaneously without crashing the browser. i give IE8 a 5 stars rating.
I think this browser is very firm and it will be help the users??.thanks for the info