Thanks to Doug Bissett for providing the WarpIn installers for WarpIn installers for SeaMonkey 2.14, Thunderbird 17.0.11, Firefox 17.0.5 beta2. Works wonderfully once I manually installs glib2 (see the readme in any of the applications) under eCS 2.1.
I do not use SeaMonkey, but the latest versions (17esr) of Thunderbird and Firefox work excellent. I was a bit concerned about Firefox, given it is still a beta2, but with 12esr having some shortcomings, I decided to upgrade Firefox as well. Glad I did: fast, reliable, and Flash and Java (via IcedTea) also work well. Hence, also thanks to the Bitwise team, Dave Yeo, and Flash and IcedTea developers. eCS is alive and kicking.