http://www.overclockers.co.uk/showproduct.php?prodid=NW-100-NG&groupid=46&catid=419&subcat=
This one
Has been fine for about 18 months with network usage up to 45%,fairly happy with that
Just the other day it dropped to a max of 3% and nothing i have tried will fix it
The connection shows connected at 1GB on at least 4 network cards/pc`s
Have tried jumbo frames (various amounts)priority vlan settings.Manual setting of gigabit on any/all cards/pc`s.Nada
with/without firewalls anti virus etc
is it possible for just the Gigabit part in the switch to break but still work?
If i need to get a new switch any recommendations?
All cat5e or cat6 cable too
This one
Has been fine for about 18 months with network usage up to 45%,fairly happy with that
Just the other day it dropped to a max of 3% and nothing i have tried will fix it

The connection shows connected at 1GB on at least 4 network cards/pc`s
Have tried jumbo frames (various amounts)priority vlan settings.Manual setting of gigabit on any/all cards/pc`s.Nada
with/without firewalls anti virus etc
is it possible for just the Gigabit part in the switch to break but still work?
If i need to get a new switch any recommendations?

All cat5e or cat6 cable too