The last syslog is, again, the other bug you had that was fixed a few weeks ago in hrev56348:
4697 KERN: vm_page_fault: vm_soft_fault returned error 'Bad address' on fault at 0x0, ip 0x609bd134, write 1, user 1, exec 0, thread 0x1a4
4698 KERN: debug_server: Thread 420 entered the debugger: Segment violation
4699 KERN: stack trace, current PC 0x609bd134 commpage_memcpy + 0x1c:
4700 KERN: (0x7133a1cc) 0x113f43e _CopyBackToFront__11HWInterfaceR7BRegion + 0xba
4701 KERN: (0x7133a23c) 0x111e384 _CopyBackToFront__21AccelerantHWInterfaceR7BRegion + 0xdc
4702 KERN: (0x7133a28c) 0x113f2b5 CopyBackToFront__11HWInterfaceRC5BRect + 0x28d
4703 KERN: (0x7133a34c) 0x113f01c Invalidate__11HWInterfaceRC5BRect + 0x58
4704 KERN: (0x7133a37c) 0x113efab InvalidateRegion__11HWInterfaceRC7BRegion + 0x5b
4705 KERN: (0x7133a3c8) 0x1136e3d FillRegion__13DrawingEngineR7BRegionRC9rgb_color + 0x1f5
4706 KERN: (0x7133a458) 0x10ac684 _SetBackground__7DesktopR7BRegion + 0xe4
4707 KERN: (0x7133a4b8) 0x10a44e3 Init__7Desktop + 0x40f
4708 KERN: (0x7133a548) 0x109ac8c _CreateDesktop__9AppServerUiPCc + 0xc8
4709 KERN: (0x7133a598) 0x109aae4 MessageReceived__9AppServerP8BMessage + 0xc8
4710 KERN: (0x7133a618) 0x1ac53ff DispatchMessage__7BLooperP8BMessageP8BHandler + 0x5b
4711 KERN: (0x7133a648) 0x1aba841 DispatchMessage__12BApplicationP8BMessageP8BHandler + 0x4e9
4712 KERN: (0x7133a848) 0x1ac7169 task_looper__7BLooper + 0x205
4713 KERN: (0x7133a888) 0x1ac5cc1 Loop__7BLooper + 0x65
4714 KERN: (0x7133a8c8) 0x1ab91ba Run__12BApplication + 0x2a
4715 KERN: (0x7133a8f8) 0x109b074 main + 0x8c
4716 KERN: (0x7133a938) 0x1099d5f _start + 0x5b
4717 KERN: (0x7133a968) 0x2235270 runtime_loader + 0x134
Your syslog.8 says you are running "Haiku revision: hrev55914"
All your other syslog are this or even older versions.
This means you are testing code in the state it was back in february.
Please make sure you are up to date to the latest version, otherwise the logs are not very helpful to me.
