Ive been incorporating AdsManager in my site now for 6 months and am yet to have any problems. It was a case of open, install and get goin. Great stuff. My only issue is the lack of availability to configue titles such as 'Latest Ads' and 'Ads'. These are fine, if it is actually ads that the site is displaying - but not if using this as a tool for displaying other indexed information.
Good stuff ;-)