Good morning
vmware workstation tries to compile 1st time I run after instllation, and I realize (that I do have source and headers installed) but the version of linux-kernel-headers avail on opensuse-factory is only 2.6.30-2.1 and the kernel and kernel-source are 2.6.30-10.1
any hints?
my factory channel is defined like this:
Index of /factory/repo/oss
Firstly, VirtualBox 3.0.2 compiled its kernel module and runs ok on my 11.2 system, that was upgraded to milestone 3 from Factory, weeks ago.
I am using kernel, -source, and -syms at 2.6.30-8.1 with kernel-headers 2.6.30-1.2, so the answer to your question is that it shouldn’t matter that you don’t have exact level match for kernel-headers.
However, no guarantees. Factory is experimental after all, a leap of faith. Good luck! 
I had this problem after first installing M3.
Although kernel{,-source} versions do not have to match the kernel-headers package version (kernel-headers is only a metapackage for the kernel-{flavor}-devel packages now), kernel-{flavor} and kernel-source have to match exactly.
Make sure you have the right set of repositories in Yast - 11.2M3 by default points to the future 11.2 repositories, you may want to change them to point to Factory.