can I just switch suse 9.0 to stop messing my real time clock ?

Hi, I've done everything twice to reset drift files and everything else, desribed in several posts. But every now and then Suse changes my cmos real time clock to wrong time - it happens on boot procedure. I have PVR HTPC and all my recordings happen at wrong times... Can I just set Suse not to touch my real time clock ? - I will adjust it manually... Regards, Robert.