I have a D-Link DSL2680 router, which has been functioning just fine until recently, but now it seems to be dropping really frequently and download speeds are painfully slow. I haven't moved anything around cable wise.
I can't find anything on this router on this site - could anyone help with letting me know how I could get it replaced or any other suggested fix?
Have you tried changing the wifi channel ?
If you have an android device there is a useful app 'wifi analyser' that can show if there is any wifi interference around you.