Hi guys,
  anybody can help me with this error I'm getting , buffer is flooded with errors of this type and none of the interfaces even reached 1% of utilization ? 
cisco says :
Explanation :  The switch module's transmit queue is full and packets are being dropped. 
Recommended Action :   Reduce the rate of packet transmission to the Switched Virtual Interfaces to be less than 9 Mbps. 
There is 20Mbps ADSL line connected and interfaces are rather on hollidays than doing something really heavy.
Regards,
Mariusz