This is continually happening both in 11.2 & 11.3 (but did not occur in 103).
Ever so often I get a
'Warning: Unresponsive script
A script on this page may be busy, or it may have stopped responding. You can
stop the script now or you can continue to see if the script will complete.
Also, we need more information on what you’re doing when the message comes up. Do you see it in an email that some executable sends to you? or on a browser when you’re looking at some address on the internet, like an ftp address in Dolphin? Or what – more info please.
This particular one appeared when I was browsing the suse forums. This type of message with other links appear when I browse other sites I visit on firefox.