This is a weird one. I have three switches:1. Catalyst 2950 (100 meg with 1000Base-SX uplinks)2. Catalyst 500 (100 meg with 1000Base-SX SFPs)3. Catalyst 500 (gigabit)Switches 1 & 2 are uplinked via 1000Base-SX, switches 2 & 3 are uplinked via 1000Bas...