Bug:1.81 cables will not break

When I try to break the cables the chunk stays but the cable is in my hand? I'm pretty sure it's a bug unless it's my forge

forge-1.4.0.55,modloader,modloadermp V2,Audiomod,Not Enough Items 1.1.3,buildcraft 2.2.13,redpower 2.0 pr4e, IC2 1.81

Ya I I found it out I upgrade all my mods tested and it worked