Multi-call binary problem

[lolo3773]

ps -aux
ps: illegal option -- a
BusyBox v1.1.3 (2008.02.25-18:27+0000) multi-call binary

Usage: ps

[admin@WL-001D603720CA root]$

Hi all,

I have a problem and i dont know why. I was installed Oleg 1.9.2.7-8 and all process function fine.

I reboot my WL-500gP and for every program (sh) i have illegal option and Busybox message.

Did have somebody had this problem ?

thanks for help

Note : I install after New oleg firmware 1.9.2.7-9 for verify if not a problem about boot firmware.