I am also having a problem with the lastest version, but I am working on wordpress 2.9.2. i just set it up today.
i was inputting alot of feeds on different topics within a two-hour period, so i suspect that somewhere there is a limit. Either only so many feeds (these are newsfeeds) can be made in RSSDoodle, only so many newsfeeds can be processed within a window of time within RSSDoodle, requests to MySQL database for my website, or access to API for Google news.
I also made edits on several of the newsfeeds as I realized i forgot some parameters. After editing, it started generating new posts of the same feed for the day. I deleted the extra posts. Not sure if either item has any effect.
Can you give me some pointers here? Thanks. It’s a great plug-in thus far though.