This could also be called an "anti-throttle" patch.
It can be found
here.
If you want the help file, it can be found
here.
The help-file must be put in the help/ directory.
The patch file, must be stored in the psybnc/ directory, and applied on a clean 2.3.2-7 psybnc with:
patch -p1 < setconnectdelay.patch
And for the lazy ones:
cd /path/to/psybnc
wget http://psybnc.at/dev/TheAvatar/setconnectdelay.patch
wget http://psybnc.at/dev/TheAvatar/SETCONNECTDELAY.TXT
mv SETCONNECTDELAY.TXT help/
patch -p1 < setconnectdelay.patch
make clean && make
On the bouncer as bounceadmin, use e.g. /setconnectdelay 60, to change the connection delay to 60 seconds.
Please let me know, if you have any problems with it.
I would not recommend usage of it on a productive system (paid bouncers) before testing it.
Oh, almost forgot... Its an ENGLISH ONLY patch. To make it work for .it or .de, you must copy (or translate) the msg14xx entries in lang/english.lng into the appropriate language file as well as translating the SETCONNECTDELAY.TXT into the ITA/DEU files as well.