zsh 4.3.9 (i386-apple-darwin10.0) inside Screen version 4.00.03 (FAU) 23-Oct-06 inside Termianl Version 2.1.1 (273)
I've had this problem once or twice. Basically, output from programs stopps wrapping.
While coding in ruby, I often inspect elements as I go inside tests. However, when this problem occurs, the output doesn't wrap.
The end of the line would just look like:
business_id: 66, published: nil, recind>
instead of
business_id: 66, published: nil, recinded_at: [sometime], [lots more properties over here]