Why has this poster's personal attack been left standing for the past four hours?

[ClarkUSA]

There have been four alerts on this poster's insulting personal attack in as many hours, yet it has been left untouched by mods:

Rex (1000+ posts) Sun Aug-14-11 05:18 PM
Response to Reply #64
Edited on Sun Aug-14-11 05:20 PM by Rex

258. But you are a delusional purist in the Democratic Party.

You've proven it here year in and year out! How can you even be such a hypocrite? Amazing.

http://www.democraticunderground.com/discuss/duboard.php?az=show_mesg&forum=439&topic_id=1734555&mesg_id=1739840

This is a fairly clear cut case of violating DU rules re: personal attacks against other DUers, so why have mods not deleted it by now (9:18 PM, August 14, 2011)? By the way, I recall that when a poster called Alpha Male told me to asked me to kill myself in an OP by Forkboy, his reply was deleted within one minute.

[Skinner]

1. Looks like they got it. (nt)