Concurrent Haskell on Win32?

I am confused about the state of Concurrent Haskell on Win32. I remember it didn't work in the past because of I/O blocking issues. IIRC, I actually verified this by compiling a Haskell web server on both Linux and Windows. Has this been fixed in the meantime? If not, it would be great to mention this in the GHC release notes in order to prevent people from figuring this out the hard way. Fixing concurrency would expand Haskell's potential range of applications tremendously... I'd really love to see that happen. -Stefan Reich (addicted Haskell programmer)