Default [Q] Google Aps not connecting thru 3G on Orange San Francisco / ZTE Blade

Hi,
I have flashed my Orange San Francisco with the FLB Froyo r10b custom ROM.

Using my GPRS/EDGE/3G, I am unable to use or connect the Google Apps such as Gmail, Youtube, Market, Navigation.

However, I am able to browse website, access gmail using the default browser with the 3G connection. Using the WiFi, I am able to connect to the Market, Gmail app but unable to connect to Youtube.

Is there a way to resolve this?

Thanks,