Can't update feeds?

My Typo blog at new.mischeathen.com has a feed that contains only the  
first post ever on that blog, and will not update.

How can I force this to behave properly? It vexes me. :(

Chet Farmer
chet <at> nogators.com
----
"I knew I love you oh various left bye." -- Erin,  according to  
CallWave's transcription service, 10/6/2007