Strange problem on our 3750 stacks - when changing the config on many interfaces, the cpu utilization increases, to the point that sometimes my ssh connection to the switch is dropped, pings fail, etc. E.g. if we do this command:
int range Fa1/0/1-48
switchport access vlan 2
Happens consistently on all of our 3750 stacks. Running 12.2(50)SE3 (ipbasek9). Problem is worse if we run via script (i.e. send many commands one right after the other in rapid succession).