[passer_byer]

Pretty good if they did it in a day. Encountered the same issue and it took me at least three days to resolve. The issue presented itself as a database table not updating.

[praptak]

It was three to four people who were poring over packet analysers, so probably a similar number of man hours.

[IYasha]

For me it was network going down after maximizing SSH console window :D

[ikiris]

Once you've seen it happen you think to check for it pretty quickly.