User-Agent: Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; .NET CLR 1.1.4322) Build Identifier: Thunderbird 3.0b4 The program won't close, with the X button, the <File><Exit>, or the Task Manager. It shuts down and immediately reopens. No other problems encountered the switch from Thunderbird two was seamless, just installed and started using profiles. Reproducible: Always Steps to Reproduce: 1.Try to close 2. 3. Actual Results: Reopens