When I start one of the applications mentioned in the title from the terminal, I get this: Registered DEC: true Error in contacting registry "org.freedesktop.DBus.Error.NoReply" "Did not receive a reply. Possible causes include: the remote application did not send a reply, the message bus security policy blocked the reply, the reply timeout expired, or the network connection was broken." Could not query active accessibility event listeners. Registered event listener change listener: true Currently I am running 12.04 This problem started a couple of days ago, shortly after I've installed okular from within the software center. by "slow" I mean it takes about 30 seconds. Other applications like chromium start instantly.