Head Up Portlander's! Next Tuesday all of the digital stations in the area (except WB/UPN) will be resetting their PSIP to comply with the new standard, so you will need to do a rescan of local channels. They will not happen all at once, so if you experience an OTA issue, rescan and it should be fixed.
I also posted this in the Portland thread.
I also posted this in the Portland thread.