Todd, from the link in the OP:
Firefox 2.x Browser
Here's how to clear your cache with Firefox 2.x browser:
- Choose "Clear Private Data..." from the Tools menu
- In the box that pops up, make sure "Cache" has a checkmark next to it.
- Make sure "Cookies" does NOT have a checkmark next to it, or you will get logged out from Lottery Post.
- Click the "Clear Private Data Now" button."
I don't see anything at all like that in Firefox.