are there any tweaks that i can apply on my xandros machine to boost up the speed on the broaband connection?

i run a dual boot system with w2000...and i ran online tests. w2000 was very fast (480 down/120up my connection is 512/12. i ran the same test on xandros and the results were very different (160/98 ).

if this info helps, im running firestarter, and my modem is hooked to a router.

cheers guys