The attack is still going on. In fact, the number of attacking computers is constantly increasing, as infected corporate PCs are being booted after the weekend.
This doesn't make any difference to the end result, as www.sco.com is not online, and probably won't be coming back until February 12th.
Tomorrow, the 3rd of February, the Mydoom.B variant will start to attack www.microsoft.com – but as this variant is not widespread, we don't expect this to have any real effects. Microsoft won't be going down.