This appears to be a common problem in 8.1 software manager.
I have used the following solution after wasting 2 days of reinstalling,
searching, reinstalling:
delete all references to the ftp site in:
/var/lib/urpmi
Software manager should work again.
Reload the list of security sites, and
Don't know if this question is appropriate here, but here goes!
I want to configure the Mandrake Single Network Firewall in my LAN. We have
cable-modem access (cisco router) with a fixed ip address (212.51.61.xxx)
Internet access is acquired with a second ip address on the server/gateway