Except the log, are there any problems to access internet?

How did you solve the speed issue. but unfortunately I now get regular wifi drops and loose my broad band connection too When connection drops, how about ADSL lights and Interent light? Can you still...

is the 802.1X Client Software only for V1 switches of the TL-SG3424? It is for both V1 and V2.

Did you read this guide? http://www.tp-link.com/en/article/?faqid=788

It is wasting money to use tl-sg2424p as an un-managed switch...:rolleyes: Are you just trying it to make more clients access internet? Describe the problem in details.

The swtich has no routing feature. You need a router to work with the cable modem instead of a switch.