On LibreOffice 3.4.2 OOO340m1 (Build:203) even files opened on version 3.3.2 whithout a hitch show now unrecognized chars (as if an Excel file was necessarily tied to cp1252). I think this is a in internal Calc bug, because when I open csv files assigning a proper charset (checked in the provided preview), when opened they show unrecognized chars and wrong assignements.
[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
Same problem with LibreOffice Calc 3.5.2.
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