I finally updated drupal to 6 this morning. I had no real problems with the core update, but I'm still fighting minor glitches. I accidentally ran the install script instead of the update script and got a bunch of mysql errors. That caught my attention but after I ran the update a couple of times they all went away. The garland theme shows up as no theme at all, no idea why. The modified marvin theme isn't modifying because it can't find the images. I can't access non-drupal directories on my site. I've had this for a while and I'm just now sorting it out. Something in .htaccess is rewriting the URLs to drupal no matter how I tell it not to do that.