I managed to delete 21 of the last 25 comments to WikiProject Oregon postings. The affected range is from 28 June 2008 through 21 July 2008.
I have the text saved, and am investigating a workable way of resurrecting it. Sorry for the inconvenience.
WordPress’s technical support was responsive. Alas, deletion is forever. Another wiki-spoiling: I expect that everything which was ever there is still somewhere. As recompense, I’ve given myself 20 lashes and re-posted the comments. I apologize for decreased formatting, but I’m pretty sure all the content is present.
—EncMstr
WikiProject Oregon 
July 24, 2008 at 5:10 pm
Looks like you’ve got sping too.
July 24, 2008 at 9:05 pm
You Rogue Admins are all alike. 😉
July 24, 2008 at 10:41 pm
I believe he’s a “rouge” admin after his “oops”. Thanks for putting ’em all back, EM! And yeah, you’ve just found one of WordPress’ bigger annoyances…
I’m thinking about scheduling a full backup every week. If anybody out there knows a good way to automate that, let me know..otherwise I’ll just be hitting the backup button when my google calendar tells me to.