Mozilla pushed out an update for Thunderbird 15 late on Monday, September 10th. This release addresses these issues: Crashes when searching emails and forwarding emails (770262, 780908) Find and replace and some other actions in the compose window were not working correctly (787673) User should be notified shortly of the update or may update via Help > About Thunderbird. The next scheduled release for Thunderbird will be on October 9th with Thunderbird 16.

“The Mozilla Foundation would like to see its Firefox browser running on more mobile phones. But since almost no handsets ship with Firefox pre-installed, that means getting the software onto more of the phones that are already out there – even if they use older hardware.“Up until this Monday, the mobile version of Firefox has required Android 2.2 and hardware that includes an ARMv7 processor. But now, however, beta versions of Firefox now include experimental support for a limited selection of ARMv6 devices. … “ 11th September 2012 Source:  The Register More  Firefox support extended to older Android mobiles