OSX Lion freezes when changing network location

system.log

Apr 16 10:05:31 schmendrick configd[14]: network configuration changed.
Apr 16 10:05:31 schmendrick UserEventAgent[11]: CaptiveNetworkSupport:CaptivePublishState:1211 en1 - PreProbe
Apr 16 10:05:31 schmendrick configd[14]: network configuration changed.
Apr 16 10:05:34 schmendrick applepushserviced[63]: <APSCourier: 0x10c837260>: Stream error occurred for <APSTCPStream: 0x7fc4fb519ca0>: The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 2.)
Apr 16 10:05:36 schmendrick loginwindow[50]: kCGErrorIllegalArgument: CGSGetDisplayBounds: Invalid display 0x042720c0
Apr 16 10:05:36 schmendrick loginwindow[50]: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
Apr 16 10:05:36 schmendrick loginwindow[50]: _NXGetScreenRect: error getting display bounds (1001)
Apr 16 10:05:36 schmendrick loginwindow[50]: kCGErrorIllegalArgument: CGSGetCurrentDisplayMode: Invalid display 0x042720c0
Apr 16 10:05:36 schmendrick Dropbox[255]: CPSGetFrontProcess(): This call is deprecated and should not be called anymore.
Apr 16 10:05:36 schmendrick Dock[240]: kCGErrorInvalidConnection: CGSReenableUpdateForConnections: Invalid connection
Apr 16 10:05:36 schmendrick Dock[240]: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
Apr 16 10:05:36 schmendrick SystemUIServer[242]: CPSGetFrontProcess(): This call is deprecated and should not be called anymore.
Apr 16 10:05:36 schmendrick RescueTime[253]: CPSGetFrontProcess(): This call is deprecated and should not be called anymore.
Apr 16 10:05:36 schmendrick Dock[240]: kCGErrorInvalidConnection: CGSReenableUpdateForConnections: Invalid connection
Apr 16 10:05:36 schmendrick JavaApplicationStub[981]: CPSGetFrontProcess(): This call is deprecated and should not be called anymore.
Apr 16 10:06:04 schmendrick applepushserviced[63]: <APSCourier: 0x10c837260>: Stream error occurred for <APSTCPStream: 0x7fc4fb511be0>: The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 2.)
Apr 16 10:06:10 schmendrick com.apple.backupd[8800]: Starting standard backup
Apr 16 10:06:10 schmendrick com.apple.backupd[8800]: Error -35 while resolving alias to backup target
Apr 16 10:06:20 schmendrick com.apple.backupd[8800]: Backup failed with error: 19
Apr 16 10:06:46 schmendrick mDNSResponder[48]: ERROR: mDNSPlatformWriteTCP - send Broken pipe
Apr 16 10:06:46 schmendrick mDNSResponder[48]: tcpConnectionCallback: error writing
Apr 16 10:07:04 schmendrick applepushserviced[63]: <APSCourier: 0x10c837260>: Stream error occurred for <APSTCPStream: 0x7fc4fb519ca0>: The operation couldn’t be completed. (kCFErrorDomainCFNetwork error 2.)