Though I haven’t had any problems of my own, I know a couple of people who installed IE8 and then complained about it running very slowly, sometimes completely bogging down their systems. This type of behavior usually signals a problem with system resources, but thanks to Ed Bott over at ZDNet, there may be a simple fix. His article, “Is IE8 really fat and slow?” gives a simple command that may help (restart your computer after running the command):
That re-registers the ActiveX Interface Marshaling Library, an obscure DLL that most people (even Microsoft experts) had never heard about. (Update: 27-Mar: Note that if you try this using Windows Vista, you must do this from an elevated Command Prompt window; type cmd in the Start menu Search box, right-click the Cmd.exe shortcut, and then choose Run As Administrator.)
According to Ed, when one of his colleagues did this, the results were stunning and IE8 was stable as well as performing faster.
Let me know if you’ve had any trouble and if this tweak helps.