12-20-2005
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Join Date: Dec 2003
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That would indicate that either the username and/or password you're using to access the system is incorrect. By "Blue Screen" I assume that you're talking about the standard graphical console login that comes with Xsun.
If you can't login as yourself, try logging in as root. If you still can't log in, you've forgotten the root password. Boot from CD-ROM, mount the root slice, and remove the password for root from the /<mountpoint>/etc/shadow file. Obviously this will involve some downtime.
If you need further help with this, just ask
Cheers
ZB