If you're using the version of NTai that came with spring or a version other than XE9RC22 which I released yesterday update it immediately and see if it still happens.
Also are these multi player games or single player? If they're multi player does the other player also have the AI and is it the same version?
If you don't know the version of your AI then there's a 90% chance you need to update it.
And are these messages saying delayed sync message? Or sync error?
yah i had the same prob with NTAI (latest release) on XTA. It was just me on one or a few ai's. Specs are 3500+ athlon with 1gb ram and 1900xt running windows xp.