I have just upgraded my (self-hosted) blog to version 3.5.1
I went through the automatic upgrade and there were no problems at all. However after all had been installed, I noticed that all of my plugins were still switched off. So I started by turning "Jetpack" on and got this error message:
"You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'TYPE=MyISAM' at line 9 on line: 1473"
this happened when trying to activate any plugin.
Since I thought that some of you might be having a similar problem, I thought I would post the way I resolved it :-)
By going to Dashboard > Updates, I clicked on "Re-install now", and it went through a quick reinstalling process, it now appears that all is back to normal. Hope this helps some of you! x