LL have announced "Second Life Behind a Firewall", SL server software for solvent corporate customers to run on their own hardware:
"Today, we’re pleased to share that the stand-alone version of Second Life solution is currently in the alpha phase. We have nine alpha installations in the field at organizations such as IBM, Naval Undersea Warfare Center (NUWC), New Media Consortium (NMC), Intel, and Northrop Grumman. And, we’re planning to go into a limited closed beta phase this summer with general availability later this year."Certainly a step towards a broader acceptance of the platform in RL business environments - I can see corporations starting to use SL worlds for internal collaboration etc. more readily when their own sysops are to blame for downtimes.