IdentLookups is off by default and sometimes not compiled in anymore, therefore proftpd fails to start

templates/misc/configfiles/debian_etch/proftpd/etc_proftpd_proftpd.conf

@@ -28,7 +28,6 @@ SystemLog						/var/log/proftpd/proftpd.log
 
 # make proftpd faster / do not perform ident and reverse dns lookup
 UseReverseDNS off
-IdentLookups off 
 
 # Set the user and group that the server normally runs at.
 User                            nobody

templates/misc/configfiles/debian_lenny/proftpd/etc_proftpd_proftpd.conf

@@ -8,8 +8,6 @@ Include /etc/proftpd/modules.conf
 
 # Set off to disable IPv6 support which is annoying on IPv4 only boxes.
 UseIPv6				on
-# If set on you can experience a longer connection delay in many cases.
-IdentLookups			off
 
 ServerName			"<SERVERNAME> FTP Server"
 ServerType			standalone

templates/misc/configfiles/gentoo/proftpd/etc_proftpd_proftpd.conf

@@ -14,7 +14,6 @@ AllowOverwrite			on
 AllowStoreRestart		on
 AllowRetrieveRestart		on
 UseReverseDNS			off
-IdentLookups			off
 ListOptions				"-al"
 DisplayChdir			.message
 UseIPv6				off
@@ -91,4 +90,3 @@ ExtendedLog /var/log/proftpd-access.log WRITE,READ write
 
 # make proftpd faster / do not perform ident and reverse dns lookup
 UseReverseDNS off
-IdentLookups off 

templates/misc/configfiles/suse_linux_10_0/proftpd/etc_proftpd_proftpd.conf

@@ -28,7 +28,6 @@ SystemLog						/var/log/proftpd/proftpd.log
 
 # make proftpd faster / do not perform ident and reverse dns lookup
 UseReverseDNS off
-IdentLookups off 
 
 # Set the user and group that the server normally runs at.
 User                            nobody