I've just started using x10Hosting for a proper site (l4w2) and it's a great service for free hosting.
I tried the lot: ByetHost, Hostinger, 000 and such, they all were poor services which would go down a lot among other things. x10's the only one which seems to be up all the time and doesn't impose silly CPU limits etc. which hamper growth of the site.
I guess you do but no one I know using x10 ever experienced one so it must be set high. Thanks.