Hi Lone wolf,
You're not alone. This is the effect of malicious traffic being sent across the network.
A team is working on a fix for this, but it has not been completed yet.
What people have been doing to get around this is; parking in rooms - some use sharguard which allows you to search the users in the room, browsing people from their upload queues, using opennap.
Theres more details in the links at the top opf the forum including a thread that contains a lot of other users suggestions.