While I was away, WordPress 2.2.3 was released as a security and bug-fix for the 2.2 series. As with any security release you should upgrade immediately, especially since two of the fixes are high priority.
You can get 2.2.3 at the WordPress download page here.
Meandering Passages was upgraded to this version this morning without any noted problems.
Technorati Tags: blogging, upgrade, wordpress