i've never had a problem with sata cables... are you sure you mean sata? on some mobos, they do tent to work their way loose unless the mobo has the updated sata 2 or something that clip in.

~Ryan 1999 T-Red SVT Contour 41k Miles #1701 / 2760 B&M, Custom Y-Pipe, Alpine HU, Pioneer 6x8's & 6x9's