Bug 618953 suggests that udisks 1.0.1-1ubuntu1 is the problem, and your list of updates has
"Inst udisks [1.0.1-1build1] (1.0.1-1ubuntu1 Ubuntu:10.04/lucid-updates)"
Bug 618953 suggests that udisks 1.0.1-1ubuntu1 is the problem, and your list of updates has
"Inst udisks [1.0.1-1build1] (1.0.1-1ubuntu1 Ubuntu: 10.04/lucid- updates) "