Many times now my two day old Go 5100 has had exactly the same strange symptoms. It appears to happen immediately after using the screen to see something using the menu or when zooming. No particular pattern as to [U]when [/U]it happens but the symptoms are identical each time, regardless if on battery or charging.\n[LIST=1]\n[*]Suddenly the screen stops responding to anything\n[*]Then after a few seconds the screen goes black except for two very small white dots about 1mm square in the top left and bottom left corner. \n\n[*]After about 20 s the black disappears and the left hand side of the screen shows a very transparent form of the map but with the right hand side of the screen being lit up but blank. \n\n[*]After a further 20 seconds or so the whole screen goes black again \n\n[*]After being black again for about 5s the normal map view comes back with my route instructions and everything is working again\n[/LIST]\n\nAny ideas what can be wrong?