I’m getting much the same thing with my WPG2 install. While I can still access the site, I have to prepend the url with www. instead of just the domain name as I was able to do before the install. I was also unable to get to log into the admin pages (kept sayin cookies weren’t enabled even though they were). I flattened the database and re-imported to pre-WPG2 status and everything worked fine again. After installing WPG2 a second time, same thing… Instead of re-importing the database again, I followed your advice and deleted the WPG2 plugin directory and everything is fine once again. Anyone have any ideas as to why this would be happening?