I just upgraded to WordPress 2.6.2 for 2.6.1 earlier. No theatrics this time by using plugins. I followed the ‘official’, by-the-rulebook method for upgrading WP. Of course, I didn’t use FTP since I keep getting disconnected during multiple transfers due to ‘too many incoming connections from this IP address’. Methinks it’s a bug with FileZilla which tries to authenticate and upload each file separately which causes this, because it never happened with gFTP. Upgrade went without a hitch, and the annoying ‘upgrade now’ bar is gone.