Don't be too sure that it's not stray IR, as discussed in the following sticky.
http://www.digitalhome.ca/forum/showthread.php?t=64463
Firmware updates can affect the sensitivity of the IR sensor. This was recently proven with a BTV update that caused similar issues. That link is included in the above. Be aware that all sorts of devices can emit stray IR, as mentioned in the sticky, not just LCDs or CFLs - the Sun or Plasmas are other common sources of this issue.
Proper optimization of the TV settings is often the first thing to try (certainly moving away from the default mode for the TV as an experiment, and ultimately for better PQ too). One other option that worked with the BTV situation was to place a "Post-It" (partially) over the sensor so that only "real" signals would get through. Other options are outlined in the sticky.
http://www.digitalhome.ca/forum/showthread.php?t=64463
Firmware updates can affect the sensitivity of the IR sensor. This was recently proven with a BTV update that caused similar issues. That link is included in the above. Be aware that all sorts of devices can emit stray IR, as mentioned in the sticky, not just LCDs or CFLs - the Sun or Plasmas are other common sources of this issue.
Proper optimization of the TV settings is often the first thing to try (certainly moving away from the default mode for the TV as an experiment, and ultimately for better PQ too). One other option that worked with the BTV situation was to place a "Post-It" (partially) over the sensor so that only "real" signals would get through. Other options are outlined in the sticky.