Hey Everybody!

I'm new here and my problem is that Friday(march 2nd 2012) i had a message saying that the usb for my charger is no good then Saturday it was fine no message and on Sunday (march 4 2012) i got again the same message . So what i did i took my battery out and put it back and it worked fine and it charged is it normal?

to be honest I'm pretty worried because i just got my Blackberry Bold 9900 a month ago.

Please Help!