I upgraded to 2.6 two days ago, and it seemed to go well. I didn't notice any problems, anyway. Then yesterday, I moved my blog from it's old spot at lynndaniels.com/blog to lynndaniels.com, carefully following the procedure outlined in Moving WordPress Within Your Site, and changed themes. After I did that, my permalinks quit working. My front page works, but all the links produce a 404 Not Found error. I've tried the temporary fixes outlined in this sticky post -- fix #1 broke my theme (Revolution), and fix #2 did nothing. I'm not an advanced user, so I didn't even attempt fix #3.
I'm kind of at a loss for things to do, and searching the forums into the wee hours last night turned up nothing for me. If anybody has ideas for things I might try, I'd be really grateful.
Thanks in advance!