In Calc when choosing a font in Styles and Formatting, there is no Thai, Lao, or Khmer language options in the drop down menu. These are languages that we use regularly in our work, sometimes with a combination of languages in the same document and spreadsheet. I have tested this using LibreOffice 3.4.3 OOO340m1 (Build:302) on Debian Wheezy.
Did you toggle tools->options->language settings->languages->CTL and CJK on ? These are supposed to get toggled *on* automatically when the locale office is run from is a CTL or CJK (respectively) locale.
[This is an automated message.] This bug was filed before the changes to Bugzilla on 2011-10-16. Thus it started right out as NEW without ever being explicitly confirmed. The bug is changed to state NEEDINFO for this reason. To move this bug from NEEDINFO back to NEW please check if the bug still persists with the 3.5.0 beta1 or beta2 prereleases. Details on how to test the 3.5.0 beta1 can be found at: http://wiki.documentfoundation.org/QA/BugHunting_Session_3.5.0.-1 more detail on this bulk operation: http://nabble.documentfoundation.org/RFC-Operation-Spamzilla-tp3607474p3607474.html
Dear bug submitter! Due to the fact, that there are a lot of NEEDINFO bugs with no answer within the last six months, we close all of these bugs. To keep this message short, more infos are available @ https://wiki.documentfoundation.org/QA/NeedinfoClosure#Statement Thanks for understanding and hopefully updating your bug, so that everything is prepared for developers to fix your problem. Yours! Florian