I was trying to update my Wiki page and got the following message:
Sorry! We could not process your edit due to a loss of session data. Please try again. If it still does not work, try logging out and logging back in.
So... I logged out and then back in. Twice. And then I cleared my cookies using the cookie script in the Cookie Problem thread. Then I restarted the browser.
It's still doing it and while it's not a 'must be updated this moment' kind of thing, I'm wondering if it's an issue with the Wiki itself or...as usual, me.