Seems to have been having issues with premature self destruction: "Discrepancy report DR-00134-2012 was issued after Operations determined that Hive version 2.

Seems to have been having issues with premature self destruction: "Discrepancy report DR-00134-2012 was issued after Operations determined that Hive version 2.5 was self-deleting prematurely. Analysis showed that a calculation involving the current time and the file modification time used to determine the time since last contact could result in a negative number that was then cast from an integer to an unsigned long integer. This resulted in a large positive number that exceeded the delete delay and subsequently caused Hive to self-delete."