My employer (a public school system) has blocked everything but IE9 on port 80 to keep students from using proxies/tunneling/[other firewall avoidance method].
Does it really matter what browser you use to view HN? It's not like it has any modern requirements for proper use. I happen to use Chrome to view HN only because I setup a "clean" Chrome install for a handful of news sites I visit. I could have easily done the same for IE and it wouldn't change a single thing. Maybe I'm grumpy today but this seems like a waste of debate-energy.
My fault...I was grumpy, thanks for apologizing although you totally didn't need to. I love the debate here but grow tired of the old browser war subject.
Had something similar happen at my last job, and although that wasn't the reason I quit, it didn't say very much about the working conditions that led me to look elsewhere. Funnily enough, the same firewall flagged a corporate press release as "pornography" and notified my boss I was looking at naughty bits, when in fact I was looking at something about the F-35.
I've never had trouble (so far at least) with HN, but I frequently need to switch to my filter-avoidance proxy for various HN links. Ironically, I am using proxy-avoidance software to get around a "blocked - category: proxy avoidance" message.