Unbreakable Encryption?

Several readers have pointed to an Israeli company's claim of achieving unbreakable encryption. The linked article reports this claim uncritically. Do you think there's such a thing as unbreakable encryption? This isn't the first time someone's made this claim, or second, or third ...

I think what they probably mean is "unbreakable within the lifespan of the solar system given exponential growth in computer power and no new cryptanalytic techniques being developed". But I think we've already got that with existing algorithms for large enough key lengths.

Fundamentally, though, it's probably a non-issue either way. Even mediocre crytpography is probably the strongest link in most systems. My friend Rob Engberg used to liken most security systems to a giant castle with a moat and huge walls...whose drawbridge is made out of Nerf.