I have just updated this laptop, and in the process, upgraded Thunderbird to 16.0 1. It will not start from the icon in the panel; from the entry in the LXDE menu; or from a terminal.
This is the message that appears when I try to run Thunderbird from a terminal:
[jim@localhost ~]$ thunderbird
/usr/lib/thunderbird-16.0.1/thunderbird: symbol lookup error: /usr/lib/thunderbird-16.0.1/libxul.so: undefined symbol: PR_SetCurrentThreadName
I noticed the same problem with this laptop when I changed over to KDE and updated that installation.
Therefore, this morning, I used a backup DVD of my LXDE installation on the laptop, to do a fresh install. Thunderbird worked perfectly, until I then went into the repositories and upgraded both Thunderbird and Firefox to their respective latest versions.
The annoying point is that, on my Dell desktop, also updated the other day, Thunderbird 16.0 1 works flawlessly.