I unclaimed and ran OakRestore on one of my previously activated (0.9.2) oaks yesterday and after several hours into the AM I gave up trying to flash it. Most attempts were right about 20 seconds with one over 20. I was doing it so frequently I ended up plugging VIN to a breadboard so I could easily pull power, reconnect power, connect to wifi, hit try again... wait a minute... check wifi, see the update failed, pull power... reconnect power, check wifi... hit next... (It got old quick).
The majority of the time I was connecting to a Netgear router:
Hardware Version WNDR4500
Firmware Version V1.0.1.40_1.0.68
I also tried a Linksys router running DD-WRT using a separate SSID. I've tried G, Mixed GN and N (previous attempts, last night it was only on N) but noticed no improvement when adjusting it:
Router Model Linksys WRT310N
Firmware Version DD-WRT v24-sp2 (08/07/10) std - build 14896
Using an iphone 5 hotspot on three attempts - no download (my opinion of that tether is "use only if you have to" so I'll blame that)
I have neighbors/shared walls and everyone has wifi around me, but uploads from the IDE once working were not an issue.
At the moment I have 1 oak in package, 3 on 0.9.2, and 1 restored that I couldn't re-activate.