Occasionally at really odd times (mostly middle of the night) I'll get a disconnection from service, but that hasn't happened in a long time, and maybe twice in the past 4 months my speed has dropped pretty sharply. But for the latter, when compared to the service I've gotten the entire time, it's just a blip.
The customer service is absolutely awful though, unless by some odd luck I can get forwarded to their corporate offices in the US.