Wow, it improves a lot indeed from what you said... Worth a try. Thank you for sharing it.

How about status of all lights on PA4010? Maybe PA4010 goes to power saving mode? Download SwitchPowerSaveTool from the link as below and turn off its power-saving mode....

They can be paired up. http://www.tp-link.com/en/article/?faqid=258

Maybe PA4010 goes to power saving mode? Download SwitchPowerSaveTool from the link as below and turn off its power-saving mode....

Kudos to Jippit and the post.

ADSL light is not on when connection drops, right? Did you try to change DSL mode to ADSL2 or G.DMT? If it won't work, maybe it is faulty. Go back to your vendor and confirm if it is still under...