Not sure why is the font on your screenshot garbled.
It should look totally different:
That's how it renders on my (and everyone else I've surveyed) computer.
For the record, the fonts we use are (in order of preference:
basis_grotesque, Helvetica, Arial, sans-serif but it really does not look like problem is with the font but rather something on your end (especially since you're saying that the same problem on other pages).