Verified answer

You have a bad cache file on your system. You can try this, it can help. It has worked for others. Make sure you do all four steps.

1. Log off YA, and get off Yahoo pages.

2. Clean internet cache files and cookies

3. Delete all temp files

4. Reboot your computer

Also make sure your Flash and Java Updates are current.

Do all the steps to make sure you get the offending file.