That's what the signup script normally does to underscores, but what is really strange is that domain isn't showing in the database but straightshaving.org is with your ip. Did you accidently use .org to create an account?
Yes, the first time I tried to re-signup I did .org by mistake (I own com, net, org, & info), but it is hosted elswhere at the moment.
Straightshaving.info appears to be working fine, no idea why you can't find it in your database, that does seem rather strange...
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matt_