Cadvault no more...we have set up shop at theswamp.
Although I have known that www.cadvault.com has been down for some time, I must say that I really miss it. Randall Rath did some really great things for the CAD community. I hope that some time soon Randall provides another forum of some kind.
In the mean time, I was told that many of the users that were Cadvault members are now posting on www.theswamp.org. While it is no Cadvault, it does provide a wealth of information and intelligent members that are more than willing to help.