Hey vees,

Sorry for a late reply..
I think I had this problem too. My problem was specifically from this repository:

deb http://maemo.o-hand.com/packages mistral/

I think I tried this:

Web address: http://maemo.o-hand.com/packages
Distribution: mistral
Components: /

Currently I cannot confirm if this worked for me or not as I do not have wireless access right now. Will let you know once I do. In the mean time.. try this and I hope it helps.