I notice in the other thread upstairs you mention installing Waves StudioRack, was it v10? if so you have had to update Waves Central to the latest version. There is another thread with peeps seemingly having trouble after updating to the latest version of Waves Central and plugs, v10, which they say is causing slow scans etc, again may not be effecting all, but I gave the final Platinum version a quick run today and it's scan was very slow, and start up slow compared to my other DAW's, I just updated WC and eligible plugs to v10 yesterday, but it hasn't had any effect on Studio One 3/4 Pro or REAPER, they are still as quick as ever, but Platinum seemed quite sluggish.