Hm -- for some reason it 404s when accessed via HTTPS. The link in the original post is a straight HTTP link, but I guess you have something that's turning it into HTTPS instead. Anyway it works just fine when accessed via straight HTTP. Obviously the site regex.info should fix that though, 404ing on HTTPs is obviously not what it should be doing!

Edit: Oh right, you asked what the famous saying actually says. Since you're apparently not familiar with it, it's a joke of the following form:

> Some people, when confronted with a problem, think "I know, I'll use regular expressions." Now they have two problems.

Here, obviously, it's being applied to something other than regular expressions, but this sort of thing is what "now you have two problems" refers to.

The actual linked article is looking into the origins of this joke.