Power Pack 1 for Windows Home Server, which includes a fix for the rare but serious data corruption bug and also adds support for x64 Vista clients, is now available as a public beta.
Details at ZDNet:
Windows Home Server gets a big bug fix (and much more)
If you’re running Windows Home Server, trust me: you want this.
Ed Bott (@ wordpress.com) 
Sure I want it… but why trust a beta release when the production didn’t work either? I’ll wait for the final version while my data resides on a USB hard drive.
I’m still surprised that MS didn’t included x64 support in the initial release of WHS but I’m glad to hear that they have fixed this.
Chad, I would invert that logic. Why should I trust a production release with a known serious bug when a newer version specifically developed to fix that bug is now available after several months of private testing?
I’m NOT trusting the production release with a known bug…. all of my data is OFF of WHS on a USB HD.. All its used for right now is remote access and daily backups, things that do work (and work well) on the system.
While I had no issues with data loss/corruption, I decided to wait for the final fix to be available.