Can't generate Rails log files

Hello,

I'm running RoR via a lighttpd webserver on linux. When my log files
got too large I deleted them, but now I can't seem to get my app to
write new logs.

I've tried re-creating the empty log files by hand and setting
permissions and I've restarted lighttpd.

Does anyone have any suggestions or an explanation for what has
occured?

Thanks for the assist,

Allen