MudGuard - Where exactly is the download page? All I could find on that link were updates for previous versions of FF and assorted general info. I have version 1 and would like to get this download, so would appreciate further directions. Thanks!

Kat - or anyone - can you tell me where the "un-do" facility is in Thunderbird? I have the preview version, so am hoping there IS one.

If I download the newest T-Bird will it obliterate all the emails & stuff I already have in the files of the current one (as new Outlooks do)? Not knowing the answer to this question is why I haven't upgraded it already.

I'll be grateful for any help - Many thanks.