if you switched from d-branch or older oleg-FW you should create a new fstab (remember new mountpoints!).
Your /usr/local/sbin scripts are lost too ^
dropbear and many other nice stuff is already included in FW - it can be disabled via WebIF, don't mind
in general, as you are now using a modern FW with recent kernel you should also switch from optware to entware
http://code.google.com/p/wl500g-repo/wiki/Goal
if you miss some
packages just inform us
here
just rm -rf your /opt - but make backups of your conf-files as you may need them afterwards...
hf
btw. wengi is not using his wl500w anymore