i faced this as well... very likely a faulty USB charger/ cable.

i've yet to send my unit to service centre. but what i did was just use another pair of usb cable. no such issue after that. i actually shared the exact same thing in the previous version of this topic. but my case... i noticed the driving mode thingy happens only when i was charging. so i used another USB cable (from the sgs2) and it's ok after that.

update1: see my post: http://forum.lowyat.net/index.php?showtopi...&#entry48487674

Hi guys,

my phone still gone haywire, the application on & off itself...eg like activate & deactivate the driving car mode, GPS on off itself....

the charging is on & off by itself....

The card scanning keep repeating itself & many many more...
even i switch it off, it will still restart by itself...

due to this problem..battery drain very fast....

i reset  the phone twice..still de same...

pls help..