Safari Hates my Proxy Server

So, Safari for Windows. I'm not the first person to talk about this, and they'll have much more interesting things to say, so I'll keep it short.

I'm behind a proxy server that requires domain authentication. FireFox works great. Windows LiveWriter works fine. Windows Media Player (using XM Radio Online and Urge) works just fine. Opera has no problems.

Safari crashes the instant I try to authenticate. Every time.

I know it's beta, but still - not too impressed so far.