Google's Math Gone Wrong?

I just saw this on Amr's blog:

Funny Google rounding error: "Try this search on Google: 1 - 0.9 - 0.1

the answer they give is: 1 - 0.9 - 0.1 = -2.77555756 × 10-17"

Amr rightfully points that the right answer should've been 0.

Rob has a screenshot here.
Really funny stuff!
Frank
Update: It's fixed now. The query [1 - 0.9 - 0.1] returns [0] on Google.

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