it is the presence of 2 shaping systems, they are balancing port shaping with packet shaping and WBS are askign you to send information in to them regarding this, so they can fine tune thier shapign rules to allow good always on access for non priority but worthwhile services, liek IRC, MSN, ICQ. Check the sticky thread abotu SSL/IRC/ICQ problems and email dylan. They are there trying to help, so help them help us... or alternativly switch to ADSL, where I hear this isn;t even an issue, that might be the perfect option for you.
But the topic name is COMPLETLEY misguiding, they don't limit connection limits, your operating system does, now let me clarify that statement, I'm not sayign the problems are your OS, I am saying the problem isnt due to them limiting connections. However when you are capped, if you open loads of connections it does mess up your speed, I shoudl mention that because they can't accuratly limit thousands of threads to an overall 64k, so soemtimes they throttle certain connectiosn to death, but I assume you are not capped.