The same problem in: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090223 Thunderbird/3.0b2
The same problem in:
Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1b3pre) Gecko/20090223 Thunderbird/3.0b2