Ever since Blender V2.4, I get a lot of "Too many users - Please blend again later" (It really says that.) errors, even on a cable connection. It is getting more famous as we speak. Now half of TGC and Filefront are Blender users also.
The only problem I have with 3dGS is the shadows. They really aren't all that great.
The only problem with Blender is that it likes to raytrace it's shadows instead of the DBPro ones, so if you make an entire level in blender, and use blender lights, you cannot use a DBPro light or else you won't get the nice raytraced shadows wherever you put the DBPro light.
Who will die first?