A few hours ago, there were at least three comments on Bill Dubuque's answer here. They no longer exist. Is there a reason they were removed, or is this a bug in the software?

• Could someone reproduce these missing comments here? People did take the time to write them. It's not clear to me what makes them no longer valid or applicable. – Pete L. Clark Dec 27 '10 at 23:01
• @Pete: I have added an image to my answer. – Aryabhata Dec 27 '10 at 23:09

• Thanks, Moron. $\$ – Pete L. Clark Dec 27 '10 at 23:20