Well i dont know anything about rom manager app, but if you have rooted you cant do OTA updates. This means updates that are pushed over the 3g connection by the carrier.
wasn't an issue before and yeah i've had a rooted droid for 3 months now it's Rom Manager saying i can't get new updates from it even tho Jrummy put out a new version running 2.2 froyo jrummy by the way
Like I said I dont know anything about rom manager. But i was just saying OTA updates are those pushed by the carrier and if your rooted then its correct. You cant get OTA updates.