Sounds like you are on a slow connection. Turning off instant messaging software (like Skype, MSN, ICQ, etc) will also be of great help.
Closing the tabs for websites like Facebook which have live chat and auto-updating of feeds (Twitter has this too) will also help reduce the frequency of these disconnects.
Also, if you have a really old computer like mine getting one that can actually process mouse clicks at a decent speed will help a lot. There's the delay in actually running the game too on your end.
And mind you, the Afterwind server's power can be summed up in one famous quote: "dang server". It tends to struggle, when, say, more than 500 players are on. And making many requests, such as spamming the "ready" button in the lobby slows it down a great deal.
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YOBA:
Youth-Oriented, Bydło-Approved