Yahoo Finance stock widget stopped working

I am using the Yahoo Finance stock widget on Dashboard that comes with OS X on both a MacBook Pro running Mountain Lion and an iMac running Lion. In the last few days, both of them stopped retrieving data. For years I have added my own mutual fund symbols to the widget to track my funds, and they have worked fine. Just to see if it made a difference, I removed my fund symbols, and suddenly the widget works again with the default stocks and indices that the widget comes with, on both of my machines.

I don't know what the issue is, but I was curious if anyone knows what is causing this. BTW, I already started using the Fidelity stock widget that is on the Apple widget site. The Fidelity widget works fine on both my machines.