Can you try using this: https://bugs.launchpad.net/ubuntu/+source/synaptic/+bug/1135687/comments/6 and then test if the freezes still happen?
Note: do it as root. Then run synaptic via gksu.
Can you try using this: https:/ /bugs.launchpad .net/ubuntu/ +source/ synaptic/ +bug/1135687/ comments/ 6
and then test if the freezes still happen?
Note: do it as root. Then run synaptic via gksu.