Saw this in a notice..... Linden Labs have recently made the decision to kill older unused accounts from the grid. The reason given for this is that the amount of unused accounts are lagging the inventory servers. If every avatar has just one alternate account, thats twice as much storage is unnecessarily being used. So from October 1 2011, Linden Labs will commence kulling any account that has not been signed into for 60 days.....So if you have alts you want to keep you need to log them in before 10/1/11.