I'm having the same problem - start a search and the autocomplete list shows but clicking on an item nothing happens. However, if I type a search in the address bar the autocomplete does work but the search results shown are from Bing.
Using FireFox, Google autocomplete works correctly, the problem only happens when using IE9 (works fine using IE8).
Windows 7 Ultimate - Avast 5 - Outpost Pro 7 - WinPatrol.
I made an attempt here and everything went as expected. I do not use IE almost never ... sometimes occurred which was mentioned above ... Make more attempts and if the problem persists, let us know!
My Computer
At a glance
Windows 7 Ultimate x64 SP1AMD PHENOM II X6 1090T 3.2GHz8GB G.SKILL RIPJAWS - F3-10666CL7DSAPPHIRE ATI RADEON HD 5870 VAPOR X OC
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My Computer
At a glance
Windows 7 Ultimate x64 SP1AMD PHENOM II X6 1090T 3.2GHz8GB G.SKILL RIPJAWS - F3-10666CL7DSAPPHIRE ATI RADEON HD 5870 VAPOR X OC