Configuration backup of TD-W9960 - here. Configuration backup of TP-Link wireless routers - here.

@Gtrem That's easy - check this post.

@Halfbob Actually, you can do that - just make sure you have replaced both - check this thread.

@Gtrem In general if you don't have any issues with the internet connectivity there's nothing to worry about. Ther's no documentation on the system log messages but you could look at this thread for...

@GailCurtis Go through this thread for troubleshooting your issue.

@Allispossible OK, I got that - check my edited response above.