Russian keyboard layout doesn't work in pre-IE10
I installed Windows 8 Release Preview 64 bit (Russian) on my new desktop and some days later I saw that Russian layout discontinue to work in Internet Explorer (I see something like "9FC:5=3HI7EJ" instead of expected "йцукенгшщзхъ") but works correctly
in all other programs. And this applied just to keyboard input since I can paste Russian text from clipboard to pre-IE10 - and it displayed correctly. How can I fix this problem?
IE10 (at least for Win8) is pretty much "set in stone" by this point. While IE10 in Win7 may change somewhat or work differently, there's no guarantee that such changes will be ported over to Win8. That being said...
...what can I do now?
There are still plenty of websites which aren't yet fully IE9-compatible, let alone IE10-compatible. Not much you can do about that. However...
The fact that you were NOT seeing such behavior when you first installed Win8 RP is, in my mind, at least suspicious. Assuming it's not a hardware (i.e., keyboard driver)-related issue, have you considered doing a PC Refresh? ...or even a PC Reset?
 I have yet to find any IE10-in-Win8 online help webpages, let alone a Compatibility View webpage for IE10. Perhaps we'll see some after IE10 Preview (beta) for Win7 becomes available later this month (supposedly)?
-- ~Robear Dyer (PA Bear) Microsoft MVP (Windows Client) since October 2002