This sounds like an infection. Tell more and scan with Grif's list and help at http://www.cnet.com/forums/discussions/how-to-remove-pup-option-603542/#post-f742c795-5881-433b-a29b-6d758efe5cd3
Title sums it up nicely. Every 10 minutes or so my DNS goes down, and is only fixed after I do windows network diagnostics. The diagnostics error message is Cannot communicate with primary DNS server, or something close to that, but it always fixes it. Until it goes down again in a few minutes. So far ive tried switching to google's public DNS, which didn't work. Any help is appreciated.

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