said by Pulsar :
Dealing with issues in Michigan for the last week as well. Speeds are fine - in fact better than I've seen them in a long time: unless you want to go to specific websites. Google is unresolvable, as in any page using PHP, Bing etc. Dogpile is working, but other sites are not. Sometimes the whole thing just grinds to a halt. Same results with 4 different laptops in 3 significantly different locations (25+ miles apart).
Same result on a call in: all is well, it must be on your end.
Normally I'd agree with that suggestion, except I've been running now for 2+ years without any issues on "my end" - and multiple computers having the same problem on multiple towers tells me that something doesn't add up on THEIR end.
This description is not incompatible with Denial of Service attacks against the sites or against Spring facilities used in providing access to them. If Sprint is suffering DoS attacks, they might either not be able to isolate them, or to fix them; that might make them reluctant to talk about them.
It does seem clear that some deep analysis of the character and timing of the service degradation is needed.