gcc-4 : am I the only one having problems?

[Mike Chandler <mailmanmike@sbcglobal.net>]

Folks, hello and thanks for the help you've generously offered thus far.
Since my testing system updated to gcc-4, I can no longer build a kernel (the 
debian way). Doing "make oldconfig" or  "make xconfig" gives errors almost 
immediately and won't build. 
Another problem when it becomes necessary to re-install the NVIDIA driver. 
Won't build. There may be other issues as well that I am not aware of.
Just curious if I need to do something other than roll back to gcc-3.3 to 
build a new kernel.
Thanks.