Nathan,
Thanks for the info, I passed it onto the MSN people offshore. Do you have any more information about how this error appears - are your customers clicking something in their browser, or linking off another website or something?
On the tool bar, between the home button and the favorites button is a search button...when you click on it a pane appears to the left of your browser window, in which you can allegedly search, it has the options 'find a web page', 'previous searches', 'find a map', and 'look up a word', then a dialog box in which you can 'find a web page containing' It is then proudly 'Brought to you by MSN'...when you hit search you get the wonderfully useful 'Sorry, the system is not working properly.' error...
I can't seem to get the error here on my PC (but I'm running IE6)
Well, I'm also using IE6 and it gives just the same results... :-( Cheers Steve