順風満帆

Excite翻訳: Full sail of wind
＠nifty翻訳: Favorable
Babel Fish: Satisfaction
Google翻訳: Sailing
Yahoo!翻訳: The wind
OCN翻訳: Smooth sailing
Windows Live Translator: Smooth sailing

Summary:
Excite, OCN, and Windows produce a kind of fixed expression,
and @nifty shows an equivalent meaning.
Babel Fish's is close, but probably, noun form is not used so often.

Reverse Translation)
Excite翻訳: 順風満帆
＠nifty翻訳: 好意的
Babel Fish: 満足
Google翻訳: セーリング
Yahoo!翻訳: 風
OCN翻訳: スムーズな帆走
Windows Live Translator: Smooth sailing

Summary:
Excite does a perfect job!