I upgraded my NSLU2 from Lenny to Squeeze the other day and WVIEW stopped updating the html pages after the reboot.
Feb 8 20:57:55 link htmlgend: : generating to /usr/local/var/wview/img
Feb 8 20:57:55 link htmlgend: : templates at /usr/local/etc/wview/html
Feb 8 20:57:56 link htmlgend: : received station info from wviewd: 20130208 20:45:00
I fiddled with it a little bit but then just re installed WVIEW using APT. I used the information here to add repositories and then just a simple apt-get install wview.