cyril7:
Hi, there is a distict differnce between dual mode Mikrotik hardware (ie that can boot either RouterOS and SwitchOS) that typically run RouterOS like a dog, and this device in question here, which does not run SwitchOS, and runs RouterOS pretty reasonably for a single core 600MHz device, however has limited switch function compared to a full on SwitchOS device.
Cyril
fact that OP is reporting 100/100 and even 300/300 with fasttrack means you're right (and runningman), as always.
horses for courses... my rb3011 can cope with gigabit fibre...
considering the 4011 seriously, but i love the lcd on the 3011. :)