L4linux on virtual box

Hi, I have built L4linux(l4linux-mag-x86.iso) and made it run on qemu successfully. But when I try to run it on virtual box, it stops, please see the following picture: I have put the iso file in Attachment, could you please have a try and give me some advise? ------------------ Best Regard, Long Fu 从QQ邮箱发来的超大附件 l4linux-mag-x86.iso (42.18M, 2013年01月06日 17:05 到期)进入下载页面：http://mail.qq.com/cgi-bin/ftnExs_download?t=exs_ftn_download&k=796563346161...