Thank you for your quick reply!!!
I found somewhere this menu from : main menu-->volume-->press at up-right corner for a while
I found that when i look out for MTP settings... but i didn't new about Nonvol Statistics... Anyway... Thank's!
I'll try that next time...
Fortunately i had a BackUp with 2012.30 maps. With this version of map it works fine...
When i update the maps with version 2012.40 the problem is back...
Garmin says nothing about Nonvol or hidden menus or... It supposed to be simple...
Run "WebUpdater"... run "Garmin Lifetime Updater" and all is OK... But...

My brother has the same device and has the same problem. I wonder...

Europe NT 2012.30 with software 6.30 is good
Europe NT 2012.40 with software 6.30 is not good
Europe NT 2012.40 with software 4.40 or 6.20 is good

Now you say about Nonvol statistics... I'll try it but not right now
Thank you once more!!!