Firefox cookie "allow window" crashes while to many "cookie allow" windows appear

[dodofalk]

1) Linux Mint 13(maya) cinnamon 64-bit
2)/3)open options->Privacy panel set "Firefox will:" "Use custom settings for history" ->check "Accept cookies from sites", "Accept third-party cookies" and "Keep until:" "ask me every time"...now if a site wnats to set too many cookies or if you click on to much "allow" buttons(not sure) on of the dialog windows chrashes (dialog windows dose not close, alle buttons and lables(and other elemtns) are not visible and you can't close the dialoge window)
4)"cookie allow/denie dialoge window" should close after click on "allow/denie"
5) allways