Nexus 10 Wifi Issues

Lately I'm experiencing an interesting phenomenon wherein I'm doing something on wifi, and suddenly, without reason, it fails. For instance, I'm downloading something from Drive or Skydrive (for a consistent download simulation) and suddenly it says "cannot download". I've searched everywhere and cannot seem to find a solution.

Further detail: The Nexus doesn't disconnect from the wifi network. The Nexus also doesn't show the wifi network as "grey" indicating that it cannot connect to Google services. For some reason, however, the up and down arrows, which once blinked rapidly and simultaneously, suddenly start to alternate slowly.

If anyone else has had this issue, please let me know. I'm certain that right after Christmas it definitely worked, as I downloaded a rather large file through Drive, and it came through just fine.