Over the last 5 or 6 months, I have been having a similar experience and it's happening again right now. The stream seems fine for 4 or 5 weeks, then it drops to 233kbps and will not go any higher; eventually it seems to correct itself, but each time it happens, the correction time gets longer. Last time was about 12 days.
It's virtually impossible to watch hockey, or any other sport, at that speed. I'm beginning to believe that one of these times the stream will not correct itself and I will be stuck with 233kbps forever.
Hi Dalia & Vancanfan67,
I recommend that you take a look at these links, they will show you some troubleshooting steps that can help you out,
Let us know how it works.