Hi - I have seen a couple of posts about similar symptons.
I just bought an EdgeRouter Lite - running 1.9.
I have ETH0 connected to the WAN, ETH1 connected to a switch where everything hangs off. I have maybe 20 clients on my network.
I notice that several times during the day that my computer loses connectivity to the internet. It is unable to resolve anything, and I get "page cannot be displayed" error messages. This seems to resolve after 30 seconds or so, but it's totally random and really starting to get old.
I emailed support about 5 days ago and other than asking me what OS release I am running, they have done absolutely nothing to help me diagnose this. I don't know where to start looking - I'm guessing there would be some sets of errors or something logged somewhere during the "Event" which could point me in a direction.
I am hoping someone can let me know where I can start looking.