Back when it took a lunch break to cause this issue it didn't bother me at all. These days it happens so fast that it is constantly interrupting me while actively browsing through the site.
Restrain from eating then.
Hm... Didn't know that obviously jest comments are ill-favoured in HN. Hackering is a serious business apparently.
So don't do that.
I wonder if this is exacerbated by people enabling the aptly named "noprocrast" setting in their profile, not knowing what it does...