IE9 on Windows 7 would load Google okay, and we could search on Google okay, but almost any other website would take an inordinate amount of time to load. The loading sprite would sit there indefinitely.
I uninstalled IE9 to roll back to IE8, and the same issue occurs.
We've reset IE settings back to defaults, and there are no add-ons causing this.
Firefox loads websites fine on this computer.
Could it be an IE-specific virus/trojan? IE was displaying an incorrect/hijacked home page.
Update: we found a trojan in the Dropbox cache folder, and deleted it, but the symptoms (and damage) remains.
We also tried registering some DLLS, but receive the following errors: