kernel warning: Clock skew detected

[Alfred]

Who can help me? I have got the folowing message:

make: *** Warning: Clock skew detected. Your build may be incomplete

First: my english is not so good, that i am able to translate it (german
would be perfekt), what does it realy mean?
second: how do I have to reconfigure in the kernel? (I am working with
SuSE 6.1 - make menuconfig)

MfG Alfred