You're saying that a web browser should consume more than the OS itself in term of RAM?

A good and optimised application consume next to nothing in term of system resource. Clearly the RC version isn't good enough to use.

They need a lot more works to make it usable or to replace builtin web browser.

Another disappointing thing are gestures, its not implemented. To zoom you'll have to either double tab or use the Volume buttons. I find it unnecessary inconvenience sometimes. Firefox always display picture in zoom mode on Facebook. You'll have to keep pressing the volume to see the picture on the screen.

Bug:
Type with virtual keyboard and then press outside the virtual keyboard but the text in the text box became blank. You'll have to press Enter to leave text on screen.