Had a similar problem this summer and I don't know what fixed it that time as I tried many different things among others to reimport certificates as namcd didn't start. Cannot access iManager either.

Tried namconfig -k and restart of server but this time no help.

The pools died last time also after patching the server
SLES 10 sp1 + OES2 (haven't applied SLES 10 sp2)

What next - loggs show that namcd wont start