error?

I got a bunch of errors like following in my Smarlist log file: ../.bin/subscribe: line 1: ./cat: Permission denied ../.bin/subscribe: line 112: ./cat: Permission denied ../.bin/subscribe: line 123: ./cat: Permission denied ../.bin/subscribe: line 140: ./cat: Permission denied ../.bin/subscribe: line 142: ./cat: Permission denied ../.bin/arch_retrieve: line 1: ./cat: Permission denied ../.bin/arch_retrieve: line 312: ./cat: Permission denied ../.bin/procbounce: line 142: ./cat: Permission denied while the list still works on distributing group mails and take sub/unsub requests. I checked all possible file permissions and folder/file ownership -- everything seem fine: /bin/cat - 755; ~slist/.bin/subscribe - 755; the target files to read have 664 and user:group=slist:slist One odd thing is every successfully posted mail is saved into a file called "cat" in the list directory. Any suggestion where to look further? Zhiliang