Please don't be complacent ... this is exactly how my problems started ... the main charger stopped working at all, but it would sill charge intermitantly with the computer and would charge just fine with the adaptor that was initially supplied with the phone and my old n70 (not USB) charger ... unless you know you have a faulty charger (and if it's happening with more than one charger then you don't!) then you have the USB port problem and need to back-up before your USB port comes properly lose! ... it took about 2 weeks from initial charging problems to the point where my USB pulled completely away!