problem with "man"

[Qin Tao <qtao@mars.iol.unh.edu>]

Hi,

I just installed compaq fortran compiler on potato(debian 2.2). I works  
except that I can't use "man" to query fortran command "fort". It showed
following error message after I typed "man fort":

man: bad fetch on multi key smbpasswd	8
man: index cache /var/cache/man/index.bt corrupt

I used "strace man fort" and found that "man" opened 
"/usr/share/man/man8/smbpasswd.8.gz" file but failed to get the proper
information. Then I tried to use "man" to query some other commands like
"lstat","fstat","strace", etc. I got the same error message as above. 
Does debian support "man" for those commands? 

Thanks in advance.