[uml-user] AT not working, uml internal clock strange

[UML U. <um...@ke...>]

Hello,
We are using uml. We need at, but it is not working.
kernel clock is strange.
date returns correct date, but "ps faux" doesn't return correct start time.
It's like if internal kernel time is slower than real time...
Example:
root@viviane:/home/guest# date
Wed Feb  4 13:04:49 CET 2004
root@viviane:/home/guest# ps faux | grep faux
root       963  0.0  0.3  2464  816 pts/0    R    12:50   0:00                  \_ ps faux

at requests stays in the queue...

internal uml call to sleep are corrects (good duration)...

Kernel is compiled with CONFIG_UML_REAL_TIME_CLOCK=y
(given by showconfig)

devfs doesn't create a /dev/rtc device (which cause some errors at uml startup with hwclock).
I've seen that /dev/rtc is directly linked to hardware, and that uml is virtual so /dev/rtc couldn't work.

Does any one has a clue to solve both problems?
Thanks,
Chris