There must be something with CRJs and the cold weather....there was 3 emergencies dealing with CRJs yesterday at Boston-Logan, all within 2 hours of each other. 2 CRJ-1s with flap failures and 1 CRJ-2 with outboard brake failure. This has happened in the past when it was very cold in Boston (0-10 F) that there were multiple flap failures with CRJs in the same day. Maybe just a fluke, has anyone heard of this occuring?