Re: yum downloads very slow!!!
I also find yum in F17 generally very slow. Much slower than in F16. Seems to hang for several minutes updating. This is on a clean install of F17. Using a DSL connection that is fast otherwise.
I experienced the same issue yesterday using Software Installer (right-click on rpm file) to install the latest version of Opera (version 12.00) that I had already downloaded from Opera's ftp site. Very weird.
Fedora 18 Gnome on a ThinkPad X220, i5-2540M CPU, Intel HD Graphics 3000, Intel N 6205 wireless, and Sierra Wireless 754S Mobile Hotspot (AT&T)