I'm running Vista SP1, fully patched, on a refurb Gateway HTPC that came with a Gateway branded remote + IR receiver. I use a Logitech Harmony 550 remote that already knew how to talk to Media Center.
A couple weeks ago, around the time I installed Windows' latest updates (installed 9/13/08), Media Center stopped responding to both the Harmony & the Gateway remotes (I checked both). The IR receiver flashes for both remotes, and also appears with no problems in Device Manager. Device Manager shows no hardware conflicts and no other hardware problems. Media Center responds just fine to my wireless xGene mini-keyboard with trackball--but the remote makes TV viewing so much easier.
I have searched online and in this forum, and nobody else seems to be reporting this problem, so it can't be an issue with the Windows updates (unless it's specific to something else in my PC). The closest I came was a post on Aaron Stebner's blog citing the same problem after MCE 2005's Update Rollup 2. The solution then was to reconfigure the broadcast channel range, but the steps Stebner gives don't appear to work with my remote.
Any ideas? TIA!!