I did a manual upgrade of wp yesterday from version 2.8 to 3.13
Everything seemed to go smoothly, other than minor problems getting plugins to work, but was resolved. However, from the start, I have not been able to save or update posts, old or new. More specifically, I can load a particular post or create a new one, but there is no save or update button at the bottom of the file. This is not the case with themes, as the save changes button does appear there.
I dismantled plugins to see if that would help but still had no luck.