WinAVR is easy and fun too use! Well it depends how you define fun, but it can at least be easy. The following section details getting started, reporting bugs, and hopefully solving your problems.
You can view the current WinAVR bugs at http://sourceforge.net/tracker/?group_id=68108&atid=520074. The current release (20060125) also has a problem with AVRStudio interaction. See the AVRFreaks.net thread on the issue.
WinAVR Start Guides
There's lots of help out there for any problems you have. If you are a member of AVRFreaks.net post a queston on the AVR-GCC forum. Most problems with WinAVR will actually be problems with the tools provided by WinAVR. This includes avr-gcc and avrdude for example - and they have their own support system. The AVRFreaks forum is often the easiest here, as it covers all the tools in WinAVR.
Yikes! You found a bug in WinAVR. First, check that it hasn't been reported already at http://sourceforge.net/tracker/?group_id=68108&atid=520074.