Upgrading, fixing bugs, getting hacked, the list goes on...
"Stephen Wolfram is the creator of Mathematica and is widely regarded as the most important innovator in scientific and technical computing today." - Stephen Wolfram
dunno how long it will take to be honest. But while df3.net is down you can post at the refugee camp at www.battle-fields.com or here. However this place is independant to df3.net....so don't blame the df3.net-, or the B-F-crew if you get terminated here for posting stuff lol.