I don't know if anyone knows how to fix this, but recently I had to reinstall my copy of windows. After installing the driver for my sound card, suddenly my taskbar disappeared. It seems it is still down there (tweaking the settings sometimes shows a HINT of it that I can right click on), but nothing I do will make it come back to normal.
In other news, Apple announced Safari 5 availability today (apple.com). I don't use Safari, but SOMEBODY does - it keeps showing up in our logs and all that. If you're one of those folks, I'd love to hear your review!