AVR Bootloader burn error in Arduino 9 and 10

well i did burn my first bootloaders under AVR Studio and it was much faster. is there any way to speed it up from within arduino? or do you recommend using AVR studio? i don't really mind the ten minutes for the handful burns that i do.

ps:

how does the board-selection in version 0010 work? i can't get the Diecimila bootloader burned on an atmega168 (inside an arduinoNG). burning completes successfully, but the chip is useless. it just continously blink on pin13. if i select the ArduinoNG as a board and bootloader everything works fine. just with the old bootloader, which doesn't timeout on invalid data, or does it?
with version 0009 i had no problems burning each with the same hardware setup!?

//kuk