To check and see if you're crazy or the "dot bug" has begun, right click on the clipboard and select Net Status. If your Variance in Delay is slowing a steady -1, close the game completely and start from scratch. When you enter the arena, check again to make sure. If you just exit the CT and move to another arena, or back into the CT, the ViD is still floored and you will still expereience megawarps.
This has happened to me hundreds of times in the CT and once in the MA.