Yes, I'm experiencing this exact same behavior. I actually spoke on the phone with SW-Soft and they confirmed that they are aware of this problem and the Dr. Web people are actively working to resolve it.
See, every night, Dr. Web automatically downloads an update to itself. Sometimes the update is just the virus definition files, but the last update also contained updated program code. The bug is that it just keeps looping continuisou7ly on scanning the same file -- I *think* that's the problem.
Anyways, the way to resolve this is to actually just wait for the update to be released. Because Dr. Web auto-updates anyway, once they release the update, the problem will be fixed.
Hope this helps clarify for the thousands of people out there who are wondering why they're server is suddenly sending 250 messages per minute.