Have you tried:
– deactivating all plugins to see if this resolves the problem. If this works, re-activate the plugins one by one until you find the problematic plugin(s).
Let me be more clear – there is no way to “de-activate” plugins. I cannot access the Admin side of the site.
I have, however, renamed the folder and all subfolders. They are inaccessible.
– switching to the Twenty Ten theme to rule out any theme-specific problems.
Yes. Same problem.
– resetting the plugins folder by FTP or PhpMyAdmin. Sometimes, an apparently inactive plugin can still cause problems.
Yes. Same problem.
– If all else fails, manually upgrade. Download a fresh copy of the latest.zip file of 3.1 (top right on this page) to your computer, and use that to copy up. You may need to delete the wp-admin and wp-includes folders on your server. Read the Manual Update directions first!
Yes. Same problem.
I’ve read the other threads as well…I wish this wasn’t being so casually dismissed.
In short, yes, I tried to not be a complete n00b who didn’t take the time to read the FAQs, search for possible answers, and look through the open threads to see if I experienced something similar.
I see other threads where the front-end had the same problem we experienced, and they all resolved the same way we have.
I see other replies from people that are experiencing the same issue with the Admin side of the site…and those do not appear to have been answered or even acknowledged as “valid errors” as of yet and are being dismissed.
The particularly weird thing here is that I’ve dug into the logs. I see a lot of “302”, “304” and “200” status errors. Which doesn’t make a whole lot of sense to me…because then I go to the paths and file names referenced, and the files are not only there, but contain no notations or references at all to being used for the redirect purposes indicated by those codes. I have checked the web server settings just to be safe, and nothing in there as well.
If it helps at all, I’m going to attach the (somewhat sanitized, just to be safe) logfiles here…at least the specific references that I mentioned above that show the error messages that don’t make sense…but certainly seem to be related here.
[Code moderated as per the Forum Rules. Please use the pastebin]