Hi Steve, (welcome to karooforums.net)
Personally I have known of a couple of people that this has happened to and I agree with you. The way that KC deal with this problem can be heavy handed and insensitive.
My mother-in-law had the same issue and I decided to try and do a little bit of analysis into what had happened. I told her to sign the 'sorry guv, I have got rid of my virus and promise to be a good customer' bit of paper, but I didn't actually fix the problem. When KC reactivated the connection, I booted up her PC and checked out what it was doing...
Lo and behold, she had been infected with a trojan of some description which seemed to be using her PC to relay email messages. Running 'netstat' showed many connections being made to PCs all over the world. KC may see this traffic on their network, or may be responding to an email sent to their abuse@..... email address from people on the receiving end of spam/viruses/trojans. This sets off the alarms and they cut off your connection (but as you say, there are probably more sensitive ways to tell you/sort this out).
It also seems that KC have probably offended you by not being entirely truthful.
Unfortunately this seems endemic at KC, with customer service and tech support folk misguiding customers on a frequent basis. Whether this is as a result of poor training or general disinterest on their part I guess we'll never know, but all the same it's a pain in the backside.
As for the speed error, that is strange. Perhaps you'd like to visit
www.speedtest.net and post your results? Line stats from your router would also be useful if possible.
Your next port of call would probably be to send a letter to KC. If I were you I'd centre on the issue of being dealt with insensitively and misguided, rather than actually being cut off. KC will simply tell you that it's their duty as an ISP to protect the service for other users so that they're acting in the greater good. Being dealt with badly is something that they should answer too though.
If you're looking for an operating system less susceptible to viruses and malware (and you want to learn something new) check out
www.ubuntu.comHope that helped.
Dyls