Yes, this is where my troubleshooting also pointed me to from my previous posts. Its junky addons people are using in wow. And its spamming your client with data requests mid raid... add some AOE and tons of recount syncing, dbm syncs, ora2 syncs, Omen sync with multi-mob threat table comparison / sync's, gearchecker which mr n00b is running sync's every second a few requests to you asking you what gear you have, Carbonite addon written by Satan himself also hammers your client requesting data from you wheter you have it installed or not... You end up in high burst scenarios overfilling your buffer space with data bursts and mr server kicks you off.
The person running the ***** addons doesnt even have to be in the raid... he only needs to be in your guild in order for it to spam you with data.
As I mentioned in my earlier posts... not all addons are written with proper chatlib throttle support. And this is where it gets bad...
Now its less obvious to Overseas people on nice connections since they sync a lot faster between clients, but for us, the server drops the weakest connection. They still drop, but not as aggressively as us Saffers.