Default [Q] any time warner ultimate broadband customers?

since upgrading to time warner ultimate broadband, the modem/router they've provided me with seems to cause problems when connecting to google services on wifi, even when switching it to bridge mode and using my old linksys router as my wifi network.

are there certain settings i need to look for or specific ports i should forward? never had a problem before with my previous router with the same ROM setup.

thanks.