Just updated to the new 2.6.9-22.0.2.106.unsupported kernel (don't see an Announce entry yet, but yum sees it) and found an apparently-minor glitch in the gcc version when updating my VMware Workstation kernel module:
# vnware-config.pl ... snip ... Using compiler "/usr/bin/gcc". Use environment variable CC to override.
Your kernel was built with "gcc" version "3.4.5", while you are trying to use "/usr/bin/gcc" version "3.4.4". This configuration is not recommended and VMware Workstation may crash if you'll continue. Please try to use exactly same compiler as one used for building your kernel. Do you want to go with compiler "/usr/bin/gcc" version "3.4.4" anyway? [no] yes
What is the location of the directory of C header files that match your running kernel? [/lib/modules/2.6.9-22.0.2.106.unsupported/build/include] ... snip ...
Despite the warning, the build finishes and VMware seems to work OK so far. Checked testing repo for a gcc update and didn't see one.
Phil