My network comprises linksys wireless G (with speedbooster) router and all network cards also wireless G (with speedbooster). Connection strength is excellent for 2 of my PCs and good to very good for the last one. Despite all this, when I copy files from one PC to the other, copy speed averages about 1-1.5MB/s, or 8mbps - 12mbps. Even windows task manager (network tab) shows network utilisation for wireless network is 25%. Why aren't I getting anywhere near the 54mbps speed? Is 54mbps the speed for the entire network, or each adapter on the network?