Good news. I've send an e-mail on Sunday to the support and received a beta release for firmware 1.0.3 today, which seem to solve the problem.

Seems the problem is related to ARP floods from the ISP provider. After a while, the switch stops forwarding arp request. There is another post in the forum about this I've send a mail to the...

I got the same problem since I installed the TL-SG108E I have a TL-SG105E with a NAS on port 1 (VLAN1), Cable Modem on port 4 (VLAN10), Dot1Q link TL-SG108E (VLAN1, VLAN10 tagged) On the TL-SG108E I...