Weird problem resolving google.com

[Elias]

Hi guys,
Do any of you ever have occasional problems resolving google.com? My nameservers can resolve it most of the time but sometimes, it fails and returns a "Server failed" error. When this happens, I need to reload the nameserver before it can properly resolve any google.com domains again. So what do you guys think? Is this some sort of cache poisoning attack or is this some weird google problem acting up? Or could it be me? :p

Thanks!

- Elias -