They were probably spammers, Smurfchops. We get quite a few who add irrelevant posts onto the ends of threads. (They get paid for putting links online, so that Google see those links and pushes the relevant websites up its rankings. They couldn't care less that they might be posting a link to, say, a college course provider in Mumbai on a totally unrelated thread on a UK website).
If you're still having problems, try removing the power to your router, wait for a minute or two, power it up again, wait until all of the lights on it have got back to normal and then attempting to print from your laptop again. That will often clear IP address conflicts, which can cause such problems.