In squid 2.3, there's a nice feature that allows fine trafic limitation in function of IPs of clients. This is called delay pools. However, to use this, it's necessary to ./configure --enable-delay-pools before compiling. Maybe this --enable-delay-pools could be added in squid.spec line for the configure script ?
Sure, fixed in squid-2.3.stable3-1; thanks for the suggestion.