First off let me say that Sencha is a young company and I am behind their vision 100%. Looks like they’re going through some rough waters – their forum has been flooded with spam like I’ve never seen. Take a look:
http://www.sencha.com/forum/forumdisplay.php?81-Ext-Discussion
They are going to have to tighten up how they create accounts to block spammers.
I think they took care of it now