Over the weekend we found bug 369270 in the 0.3.1 release candidate. Due to this and to the large number of locales that need to be verified, we are holding one more test day for 0.3.1. The test day will be on Friday, February 9th. It will begin at 13:00 UTC and last for twelve hours. We will be testing each locale to ensure that nothing is broken in the translation, and we will verify that the timezone fixes in 0.3.1 are working properly.
We are very close to release of 0.3.1. Please join us for this final push. You can find all the information about the test day here: http://wiki.mozilla.org/Calendar:Current_QA_TestDay
Thanks for your help.