Hi Glenn,
I've been trying to track down the problem with CHS but lately it's been working so I can't recreate it.
Don Carlson had sent me an email saying that another software package he uses stated there was a problem with Yahoo! data, however it appears any such problem has been corrected, at least from AI's perspective.
Is this still happening at all on your system? I know it has happened to me at least once last month when you first reported it -- unfortunately I wasn't able to debug it at that time.
Let me know if it happens again and I'll try to recreate the problem that day.