How can I change language in thunderbird
 

I downloaded my language specific package of thunderbird from official mozilla repository but when I tried install to slackware 64 could see that package is totally different than Slackware source.
¿There are some slackbuild for compile official thunderbird packages ? or ¿how can I change language from slackware source?

I think the best thing to do is install the official Slackware package for mozilla-thunderbird, and then download and let thunderbird install the language pack that you want from this URL (select just one .XPI file for your language). Get the language files for thunderboird 3.0.1 here: http://releases.mozilla.org/pub/mozi...inux-i686/xpi/ Obviously, for other release versions you adapt the URL a little. The .XPI is useable for 32-bit as well as 64-bit Slackware, or any other Linux (it even works in Windows).

That way, you can easily upgrade thunderbird whenever Slackware has an update available.

Eric

Ok, I've accomplished. I was unaware of the existence of .xpi packages, thanbk you very much.

After solve the matter language I had another problem with the format date, thunderbird present the date format in MM/DD/YY, US format, but I need european date DD/MM/YY.
After turning many laps to new matter i find that the best solution for slackware64 is edit thunderbird with # nano /usr/lib64/thunderbird-3.0.1/thunderbird and add this line in first position of file, after the comments.
es_ES could set either language.

For bottom line I like comment that, install locale idiomatic .xpi package from into thunderbird application isn't enought, it must edit /usr/lib64/thunderbird-3.0.1/defaults/pref/all-l10n.js and change
if not, it not work.
Thunderbird is very well but some details are very bad, date formats, locales, etc. and for 64 bits it not simplifique, recompile with idiomatic kits is not reliable.

Or use the configuration-editor and search for general.useragent.locale. Switch the value to your desired locale.
There's also an add-on that does it for you: Quick Locale Switcher (especially handy when you use several languages).

For changing the date display format, read this page on mozillaZine.

Aha, this add-on is a well tool, thanks.
I like Thunderbird. He is equal or better than Apple Mail.