I think there have been some serious 10.9 wifi issues, just anecdotal from my 10.9 experience too. I've always been impressed in the past with my Macs' ability

I think there have been some serious 10.9 wifi issues, just anecdotal from my 10.9 experience too. I've always been impressed in the past with my Macs' ability to wake up and get on Wifi in just a second or two at the extreme, but since 10.9, I've had all sorts of weird connection issues.I went so far even as to wonder if a device in my home was shorting and putting out stray EM radiation as I've actually had and fixed that problem with a friend's lamp before.