I think the problem here can be summed up in one word.
Communication, or rather the lack thereof.
Sandra, I do appreciate the technical and administrative complications Symantec, like any software vendor, face in handling the EOL of a product. Ryan, I'm not even suggesting that I expect to have software that truly works forever.
My point is that we (and no doubt countless other users) were led to believe that the software would continue to work for the immediate future and that if things changed, we would
have some time to retire the product and look for an upgrade or an alternative.
Instead, Symantec has continued to issue definition updates for this 8 year old software, suggesting to users of said software that all is well. Yes I realise that the definitions may apply to all your products but the point is from a user's perspective, all was well until last week.
Then, suddenly a definition update "breaks" SAV8. Your users were given no clue as to what had happened and why, instead they had to search the internet to discover this forum and to realise that effectively the plug has been pulled.
I am fairly sure that your programmers could have notified users by means of a program update. The LiveUpdate supports code updates in addition to the virus defs, but this is a technicality and not something your users should have to think about.
I can see I'm not getting anywhere with this and as we've already decided to go elsewhere for our AV, further contributions to this thread seem pointless too.