did you installed the ipkg for usb printer (kmod-usb-printer)
whem my box is idle the top looks like this
Code:
Mem: 61644K used, 1284K free, 0K shrd, 25340K buff, 18396K cached
Load average: 0.00 0.00 0.00
PID USER STATUS RSS PPID %CPU %MEM COMMAND
16205 root R 436 16202 1.1 0.6 top
16201 root S 564 562 0.1 0.8 dropbear
669 root S 5712 1 0.0 9.0 SABnzbd.py
738 root S 5712 670 0.0 9.0 SABnzbd.py
733 root S 5712 670 0.0 9.0 SABnzbd.py
737 root S 5712 670 0.0 9.0 SABnzbd.py
735 root S 5712 670 0.0 9.0 SABnzbd.py
734 root S 5712 670 0.0 9.0 SABnzbd.py
674 root S 5712 670 0.0 9.0 SABnzbd.py
684 root S 5712 670 0.0 9.0 SABnzbd.py
670 root S 5712 669 0.0 9.0 SABnzbd.py
671 root S 5712 670 0.0 9.0 SABnzbd.py
672 root S 5712 670 0.0 9.0 SABnzbd.py
673 root S 5712 670 0.0 9.0 SABnzbd.py
732 root S 5712 670 0.0 9.0 SABnzbd.py
742 root S 5712 670 0.0 9.0 SABnzbd.py
740 root S 5712 670 0.0 9.0 SABnzbd.py
675 root S 5712 670 0.0 9.0 SABnzbd.py
676 root S 5712 670 0.0 9.0 SABnzbd.py
743 root S 5712 670 0.0 9.0 SABnzbd.py
739 root S 5712 670 0.0 9.0 SABnzbd.py
Code:
root@OpenWrt:~# uptime
12:52:24 up 20:38, load average: 0.00, 0.00, 0.00