My paraphrased version of the back story:
Lieberman's website went down today due to increased web traffic. Lieberman's staff came out and blamed it on Lamont and/or hackers, when it was actually just because Lieberman had an inadequate web host for the crazy nation-wide traffic. And instead of taking ownership of the problem, and/or calling in the pros to fix it, they tried to use it as a way to throw some mud on Lamont.
Anyway... Here's the part I just love (quoting from DailyKos.com)
"The Lamont campaign immediately offered its technical staff (they have competent ones) to the Lieberman campaign to help get their site back up. But the Lieberman campaign refused. "
"For their part, the Lamont campaign has offered its technical expertise to get Lieberman's site back up (which could be done in an hour by a competent sysadmin), and has added a link to the googlecached version of Lieberman's site at the top of their blog. One side is acting mature, the other is running around making baseless accusations."
Here - http://www.dailykos.com/storyonly/2006/8/8/15948/78690
And here - http://www.dailykos.com/storyonly/2006/8/8/153827/3493