I tried IE9 x64 version without Bing several weeks ago on my Vista Ultimate SP2 x64 and was a very unhappy camper. Found it to be very slow and features did not work correctly at all including Flash.
IE9 search took over with 'Bing' for a search provider and I was unable to choose anything else.
Finally reverted back to IE8.
Someone told me that I should have used the x86 version instead....is that true? Does IE9 download two versions and one chooses what they wish?
I also have a Laptop with Win 7 HP SP1 x64 and I have not installed IE9 on that either based on the experience I had with the Vista install.
Any suggestions greatly apprecated.