Problems Getting into Synaptic After 15.10 Upgrade

Before upgrading to 15.10 I was able to bring up Synaptic using my password. Today it didn’t accept my password at first. But after repeated tries and rebooting it finally accepted my password. But it is hit and miss. Sometimes I can get in and other times not. Has anyone had this problem? Thanks.

The password authentication that appears would be the system-wide dialog for any privileged program. I can’t see this affecting just Syanptic (that would be very strange), so you could give this command a test: gksudo caja,

I’ve had no issues since upgrading from 15.04 to 15.10. It could be a misconfigured keyboard layout or (if it’s a wireless keyboard) interference causing missing keystrokes as you type… or flat batteries?