Default Unknown Problems With Y Duos

I Never Had This Problem/Bug BeFore...

After Connecting Usb The Phone Keeps Charging ..But When I Disconnect The Usb,Stil The Phone Keeps Showing As If It Is Charging and Also There Is USB icon In Statusbar..After Rebooting Phone The USB icons disappear..

And Some Times I Have Reverse Of That...After Connecting USB it doesnt Shows Up Any Icons Nor It take Charge....After I Reboot The Phone It Becomes Ok....

I M sick of This Rebooting..Phone

Tryd Flashing Stock Rom -DDL4..Stil Its There..
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