When the workload becomes high on my router, i.g. download + high local traffic, the router stop transfering data.

The power- WAN- and connected LAN-leds are on, but there are no flashing of the leds indicating datatransfer.

When i unplug the power coord and plug it in again, the router is working fine for a period again. But the fault returns every now and then....

I guess this is a hardware problem, but before i ship my router off for service, I would like to know if anyone has experienced something similar,
or if there are any settings on my router that i should focus on. (Default settings are loaded).

I am using the wl500g- firmware...

SCSI, Norway