I wubs u wp!
This blog has been sitting on WordPress 2.1.3 for quite sometime now as the latest WP releases just wouldn’t work right with my modded K2 theme. However I have just upgraded from 2.1.3 to 2.2.2 with hardly any side effects, which is a tad odd but great at the same time.
So if anything does look out of place or broken, please give me a shout as I’ve yet to notice anything wrong. As a matter of fact the upgrade went surprisingly smoothly as it used to! Taken from www.wordpress.org
As these releases include only security and minor bugfixes they should not cause any plugin or theme compatibility issues, so you have no good excuse not to upgrade.