rEFIt wont boot on USB

[martine.ginette]

Dear everyone,

I have installed Kubuntu (10.10) on top of OSX (10.6) on my MacBook (7.1). When I start the computer, rEFIt asks me if I want to boot on OSX or Linux. When a USB key is plugged in and bootable, rEFIt also asks me if I want to boot on it. However, if I select the USB key, rEFIt still boots Linux on my HDD! What did I wrong?

Thanks in advance for your precious help,

Martin.

[martine.ginette]

Here is an element of response:

http://sourceforge.net/tracker/?func...17&atid=821764