[Defy Android Development] silvagroup:
Removed previous apk installe new one same thing VNC connection fail.

Don't know if this will help any but I tried it while connected to Eclipse and here is the log from Eclipse explorer when I tried it:

03-09 17:55:43.249: DEBUG/dalvikvm(3522): GC freed 5627 objects / 306216 bytes in 75ms
03-09 17:55:45.850: INFO/NotificationService(1255): enqueueToast pkg=scd.debondroid callback=android.app.ITransientNotification$Stub$Proxy@45a21e28 duration=1
03-09 17:55:46.085: DEBUG/AndroidRuntime(5165): >>>>>>>>>>>>>> AndroidRuntime START <<<<<<<<<<<<<<
03-09 17:55:46.085: DEBUG/AndroidRuntime(5165): CheckJNI is OFF
03-09 17:55:46.092: DEBUG/dalvikvm(5165): creating instr width table
03-09 17:55:46.178: DEBUG/AndroidRuntime(5165): --- registering native functions ---
03-09 17:55:46.288: DEBUG/GestureManager(5165): register_com_motorola_android_hardware_GestureManager
03-09 17:55:46.296: DEBUG/ddm-heap(5165): Got feature list request
03-09 17:55:46.405: INFO/ActivityManager(1255): Starting activity: Intent { act=android.intent.action.MAIN flg=0x10000000 cmp=android.androidVNC/.androidVNC }
03-09 17:55:46.467: DEBUG/AndroidRuntime(5165): Shutting down VM
03-09 17:55:46.467: DEBUG/dalvikvm(5165): DestroyJavaVM waiting for non-daemon threads to exit
03-09 17:55:46.467: INFO/WindowManager(1255): Setting rotation to 1, animFlags=0
03-09 17:55:46.467: DEBUG/dalvikvm(5165): DestroyJavaVM shutting VM down
03-09 17:55:46.467: DEBUG/dalvikvm(5165): HeapWorker thread shutting down
03-09 17:55:46.467: DEBUG/dalvikvm(5165): HeapWorker thread has shut down
03-09 17:55:46.467: DEBUG/jdwp(5165): JDWP shutting down net...
03-09 17:55:46.467: DEBUG/jdwp(5165): Got wake-up signal, bailing out of select
03-09 17:55:46.467: INFO/dalvikvm(5165): Debugger has detached; object registry had 1 entries
03-09 17:55:46.467: DEBUG/dalvikvm(5165): VM cleaning up
03-09 17:55:46.499: INFO/ActivityManager(1255): Config changed: { scale=1.0 imsi=310/410 loc=en_US touch=3 keys=1/1/2 nav=1/1 orien=2 layout=34}
03-09 17:55:46.585: ERROR/AndroidRuntime(5165): ERROR: thread attach failed
03-09 17:55:46.757: INFO/foo(1255): ********************** resuming: 1164646808
03-09 17:55:46.764: INFO/sqlite3(3522): log level set to 0
03-09 17:55:46.913: DEBUG/dalvikvm(5165): LinearAlloc 0x0 used 643668 of 5242880 (12%)
03-09 17:55:47.053: WARN/IInputConnectionWrapper(4691): showStatusIcon on inactive InputConnection
03-09 17:55:47.139: INFO/ActivityManager(1255): Displayed activity android.androidVNC/.androidVNC: 672 ms (total 672 ms)
03-09 17:55:47.342: INFO/sqlite3(5166): log level set to 0
03-09 17:55:47.452: DEBUG/su(5166): 10129 scd.debondroid executing 0 /system/bin/sh using shell /system/bin/sh : sh
03-09 17:55:47.960: VERBOSE/WifiStateTracker(1255): DHCP pre/cur states: 1 : 1
03-09 17:55:48.647: INFO/DEBUG(5186): debuggerd committing suicide to free the zombie!
03-09 17:55:49.405: DEBUG/dalvikvm(1255): GC freed 5809 objects / 279664 bytes in 167ms
03-09 17:55:50.295: INFO/ActivityManager(1255): Starting activity: Intent { cmp=android.androidVNC/.VncCanvasActivity (has extras) }
03-09 17:55:50.327: INFO/foo(1255): ********************** resuming: 1164098832
03-09 17:55:50.413: INFO/VncCanvas(3522): Connecting to localhost, port 5901...
03-09 17:55:50.436: ERROR/VncCanvas(3522): java.net.ConnectException: localhost/127.0.0.1:5901 - Connection refused
03-09 17:55:50.436: WARN/System.err(3522): java.net.ConnectException: localhost/127.0.0.1:5901 - Connection refused
03-09 17:55:50.436: WARN/System.err(3522): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:255)
03-09 17:55:50.436: WARN/System.err(3522): at org.apache.harmony.luni.net.PlainSocketImpl.connect(PlainSocketImpl.java:220)
03-09 17:55:50.436: WARN/System.err(3522): at java.net.Socket.startupSocket(Socket.java:780)
03-09 17:55:50.436: WARN/System.err(3522): at java.net.Socket.tryAllAddresses(Socket.java:192)
03-09 17:55:50.436: WARN/System.err(3522): at java.net.Socket.<init>(Socket.java:256)
03-09 17:55:50.436: WARN/System.err(3522): at java.net.Socket.<init>(Socket.java:220)
03-09 17:55:50.436: WARN/System.err(3522): at android.androidVNC.RfbProto.<init>(RfbProto.java:248)
03-09 17:55:50.436: WARN/System.err(3522): at android.androidVNC.VncCanvas.connectAndAuthenticate(VncCanvas.java:208)
03-09 17:55:50.436: WARN/System.err(3522): at android.androidVNC.VncCanvas$3.run(VncCanvas.java:165)
03-09 17:55:50.508: INFO/sqlite3(1903): log level set to 0
03-09 17:55:50.780: INFO/ActivityManager(1255): Displayed activity android.androidVNC/.VncCanvasActivity: 465 ms (total 465 ms)
03-09 17:55:55.650: DEBUG/Gestures(1255): poll_thread : Before sending to uinput
03-09 17:55:55.850: DEBUG/dalvikvm(4691): GC freed 1393 objects / 94600 bytes in 65ms
03-09 17:55:56.069: DEBUG/StatusBarPolicy(1255): raw_sig_level = -103 iconLevel = 2
03-09 17:55:56.085: VERBOSE/VSuite(1334): [J-VST-DEBUG 23933327]onSignalStrengthChanged, msignalStrenth = SignalStrength: 10 -1 -1 -1 -1 -1 -1 gsm 2 -103 -11
03-09 17:55:56.526: DEBUG/Gestures(1255): poll_thread : Before sending to uinput
03-09 17:55:56.785: DEBUG/Gestures(1255): poll_thread : Before sending to uinput
03-09 17:55:56.992: VERBOSE/WifiStateTracker(1255): DHCP pre/cur states: 1 : 1
03-09 17:56:01.186: VERBOSE/VSuite(1334): [J-VST-DEBUG 23938434]onSignalStrengthChanged, msignalStrenth = SignalStrength: 8 -1 -1 -1 -1 -1 -1 gsm 2 -110 -13
03-09 17:56:01.194: DEBUG/StatusBarPolicy(1255): raw_sig_level = -110 iconLevel = 0

Hope that helps.

Thanks