Error message...

I recently ran a defrag. Shortly after, I recieved the following error message upon my next startup.

Does this mean anything I should worry about, and if so, what should I do?

Is your machine acting any different from usual? Because that looks like a completely common error message that XP gives every time something goes wrong, and that something usually goes away after a reboot.

Remember back in Win95/98 when you used to get reminded “don’t turn the power off without clicking shutdown first!”? This is the same message, just way more cryptic for whatever reason. Unless it starts happening every time you boot, don’t worry about it.