Have just upgraded to WordPress 3. For starters the upgrade process is streets ahead of what it used to be – I used to dread upgrading our WordPress MU site, as it generally involved reading a long list of steps to take depending on which version you were moving from – now it is just an “Upgrade Automatically” button – nice 
Working a treat on my single Tek4L blog, so now just need to do a test upgrade on the main CORE blog MU installation.
