Login fail/glitch

Server login problms.

What I expected to happen was...:
Join one the servers i liked going on.

What actually happened was...:
The screen froze, and when i clicked on cancel it says not responding or it closed minecraft and didn't show a crashing screen. Also if i don't click on anything it says "java error, bad login"

Steps to Reproduce:
1. I don't know how to triger it...
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