I'm running Source 9.1 and find that everything seems to work OK until or if I install the updated kernel after this is installed my CD ROM doors keep opening I have checked with my very limited knowledge to see what program is sending the eject command but have found nothing as I say this is with very limited knowledge of linux. Anyway I have chosen now not to update the kernel and the problem is not present. What are the benefits of updating the kernel and if it is a nessecity for the overall system if so what could be causing this quirky error.

Excuse me for my ignorance...but what is "Source 9.1"?

That should have read Suse 9.1 been struggling with an source file elswhere hence the slip.