/var/log/secure.log:
May 27 12:05:28 bigmac com.apple.SecurityServer[32]: Session 0x5fbff962 created
May 27 12:05:29 bigmac com.apple.SecurityServer[32]: Entering service
May 27 12:05:35 bigmac com.apple.SecurityServer[32]: Succeeded authorizing right 'config.modify.com.apple.CoreRAID.admin' by client '/System/Library/PrivateFrameworks/CoreRAID.framework/Versions/A/Resources/CoreRAIDServer' for authorization created by '/System/Library/PrivateFrameworks/CoreRAID.framework/Versions/A/Resources/CoreRAIDServer'
May 27 12:05:55 bigmac com.apple.SecurityServer[32]: Session 0x2a00010 created
May 27 12:05:55 bigmac com.apple.SecurityServer[32]: Session 0x2a00010 attributes 0x30
May 27 12:05:55 bigmac loginwindow[47]: Login Window Started Security Agent
May 27 12:05:56 bigmac SecurityAgent[101]: Showing Login Window
May 27 12:07:39 bigmac SecurityAgent[101]: User info context values set for mi

/var/log/system.log:
May 27 12:05:53 bigmac /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[47]: Login Window Application Started
May 27 12:05:54 bigmac com.apple.kextd[10]: Can't load /System/Library/Extensions/IOSerialFamily.kext/Contents/PlugIns/InternalModemSupport.kext - no code for running kernel's architecture.
May 27 12:05:54 bigmac com.apple.kextd[10]: Failed to load /System/Library/Extensions/IOSerialFamily.kext/Contents/PlugIns/InternalModemSupport.kext - (libkern/kext) requested architecture/executable not found.
May 27 12:05:54 bigmac com.apple.kextd[10]: Load com.apple.driver.InternalModemSupport failed; removing personalities.
May 27 12:05:55 bigmac loginwindow[47]: Login Window Started Security Agent
May 27 12:05:55 bigmac WindowServer[81]: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
May 27 12:05:55 bigmac com.apple.WindowServer[81]: Fri May 27 12:05:55 bigmac.local WindowServer[81] <Error>: kCGErrorFailure: Set a breakpoint @ CGErrorBreakpoint() to catch errors as they are logged.
May 27 12:05:58 bigmac configd[14]: network configuration changed.
May 27 12:05:58 bigmac configd[14]: setting hostname to "bigmac.frenetic.lan"
May 27 12:07:06 bigmac com.apple.kextcache[118]: /System/Library/Extensions/IOSerialFamily.kext/Contents/PlugIns/InternalModemSupport.kext doesn't support architecture x86_64; omitting from prelinked kernel.
May 27 12:07:18 bigmac com.apple.kextcache[118]: Created prelinked kernel /System/Library/Caches/com.apple.kext.caches/Startup/kernelcache_x86_64.3A0F8A0F.

/var/log/windowserver.log:
May 27 12:05:53  [81] Server is starting up
May 27 12:05:55  [81] CGXMappedDisplayStart: Display0 : boot screen
May 27 12:05:55  [81] CGXMappedDisplayStart: Display0 : no display alias property
May 27 12:05:55  [81] CGXMappedDisplayStart: Display1 : no display alias property
May 27 12:05:55  [81] CGXMappedDisplayStart: Display2 : no display alias property
May 27 12:05:55  [81] GLCompositor: GL renderer id 0x01021b02, GL mask 0x00000007, accelerator 0x0000312f, unit 0, caps 0x00000003, vram 1024 MB
May 27 12:05:55  [81] GLCompositor: GL renderer id 0x01021b02, GL mask 0x00000007, texture units 8, texture max 16384, viewport max {16384, 16384} extensions 0x0000000f
May 27 12:05:55  [81] agc_attach: Couldn't find any matches
May 27 12:05:55  [81] CGXPerformInitialDisplayConfiguration
May 27 12:05:55  [81]   Display 0x2b28520c: MappedDisplay Unit 0; Vendor 0x10ac Model 0xa055 S/N 809060172; online enabled (0,0)[2560 x 1440], Rotation 0, base addr 0x103800000
May 27 12:05:55  [81]   Display 0x3f003e: MappedDisplay Unit 2; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (3584,0)[1 x 1], Rotation 0, base addr 0x103800000
May 27 12:05:55  [81]   Display 0x3f003d: MappedDisplay Unit 1; Vendor 0xffffffff Model 0xffffffff S/N -1; offline enabled (3585,0)[1 x 1], Rotation 0, base addr 0x103800000
May 27 12:05:55  [81] Display 0x2b28520c: MappedDisplay Unit 0; ColorProfile "DELL U2711" (MD5 69a74cbbb47af799084818f21212a1af)
May 27 12:05:55  [81] kCGErrorIllegalArgument: CGXSetWindowListTags: Operation on a window 0x2 not owned by caller (PID 102)