Hello.
I'm having a similar problem: the phone stops working and freezes when I swipe on the notifications bar... I can only force the shutdown and then I get an error message like "There are several error on the SD... should I try to fix them?"
It happened 3 times and I've just formatted the SD, just to be sure I has not errros inside. BUt now, after I installed some apps (lastly Here Maps and MSN apps) the phone suddenly stopped again!
The Lumia 830 is quite new (2 months of life) and also the SD card.
Is there a tool to check if the SD card has any problem in it?
Or it is a bug of the Lumia 830?
I choose to save averything (photo, videos, apps) in the SD, so you can understand this is not a good news.
PS: if I connect the phone to the PC while the phone is freezed I can see it normally as a USB device.
PLEASE HELP!!! DID YOU SOLVE THE PROBLEM?:angry: