[syslog-ng] New Linux Kernel message hi resolution timestamps.

I realize that this is not specific to syslog-ng, but was not sure where to turn. Starting with a fairly recent linux kernel (perhaps 2.6.30) the messages sent via /dev/kmsg have the format [167007.168017] ... some text ... where these numbers seem to be seconds.microseconds since the last boot. Is there any way to configure the linux kernel to NOT put this detail in messages? Thanks.