[Alphasite]

I don't have either problem since upgrading to Leopard. I did have some problems with WW not running but I fixed it with:

update_prebinding -force -root /

and then rebooting.

Check your console logs for messages like:

com.apple.launchd[1] (com.apple.dyld) Throttling respawn: Will start in 59 seconds

If you see those then you might have the same problem.