$ tail -f .vnc/workstation\:1.log 
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  1 (X_CreateWindow)
  Value in failed request:  0x21
  Serial number of failed request:  37
  Current serial number in output stream:  45
X Error of failed request:  BadValue (integer parameter out of range for operation)
  Major opcode of failed request:  2 (X_ChangeWindowAttributes)
  Value in failed request:  0x800c
  Serial number of failed request:  55
  Current serial number in output stream:  69

Wed Jun 27 09:27:19 2007
 Connections: accepted: 10.50.3.100::65367
 SConnection: Client needs protocol version 3.8
 SConnection: Client requests security type VncAuth(2)
 VNCSConnST:  Server default pixel format depth 16 (16bpp) little-endian rgb565
 VNCSConnST:  Client pixel format depth 16 (16bpp) little-endian rgb565