no. this is the first time it has happened since i have been going to it and i have had an eris since december and going to xda since feb. it is just the host of the xda site doing maintenance and it did not go as well as was expected.
not sure if it explains it on that site because i have never been there but in the eris dev. section of xda (whenever it gets back up) there are stickies that thoroughly explain it. before xda i didnt know anything about android at all. once you get the hang of it it becomes infinitely more easy! trust me
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