release issue

I have a SuSE Enterprise Server v9 server that I *think* I applied SP1 to, but can't verify. I was assuming /etc/SuSE-release would be updated, but it still has: SUSE LINUX Enterprise Server 9 (i586) VERSION = 9 Does SuSE have any way to see if it's running SP1 or am I limited to looking at rpm versions? cjs