Loading Meemix (flash) site stops

Meemix is an internet radio service similar to Pandora.

After almost finishing loading the site, firefox does not respond anymore.
This happens since yesterday. Before I had no problems.

With other flash sites like Youtube and Google Video I have no problems.

On my Xubuntu computer and my Vista computer I have no problems with Meemix.

Why does loading of the Meemix site on my Ubuntu computer come to a standstill?

Problem solved!

After deleting the Meemix cookie nothing changed, but after a total clear private data in Firefox, the sites works again.