Ubuntu :: Logged Errors Climb Into GB Range Fast?

I have had this happening off and on, since I moved to Ubuntu 10.04, via clean install. I did pick EXT4, which is the only difference I can think of.

What happens is, 3 of my log files suddenly start filling fast with "Unknown" errors. The three files are kern.log messages and syslog. All three files will have about the same measurement of size. It can take a few weeks or it can speed along fairly fast and use up my free space of 6 GB. For instance, today, I blanked the three files and within the space of about 4 hours they grew to almost 2 GB each! I blanked them again and rebooted, and in 3 hours they only grew to 5 MB each.

Below is a sample which shows where the "unknown" errors start. The first such error is in BOLD so that it is easy to find. Once they start happening there is little else printed in the logs. Does anyone know how to track down what is happening and fix this?

Dec 1 22:11:05 ispy kernel: [ 26.553797] Console: switching to colour frame buffer device 210x65
Dec 1 22:11:05 ispy kernel: [ 26.653060] ath5k phy0: Atheros AR2414 chip found (MAC: 0x79, PHY: 0x45)
Dec 1 22:11:05 ispy kernel: [ 26.653088] cfg80211: Calling CRDA for country: CO
Dec 1 22:11:05 ispy kernel: [ 26.654314] au8830 0000:00:10.0: enabling device (0104 -> 0107)
Dec 1 22:11:05 ispy kernel: [ 26.654346] au8830 0000:00:10.0: PCI INT A -> Link[LNKD] -> GSI 9 (level, low) -> IRQ 9

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