I am sure it will infuriate much of U+1, as this might be hardware specific, but I have found a lot of apps (as well as the dash) have sped up a lot with a fresh install of the most recent daily iso. I had been running saucy since the toolchain was uploaded, and it has been a month since I've done a fresh install, so I suppose my system was a bit bloated, or the newest updates gave me a jump.
Nonetheless I have found three programs that usually take forever to load that load right away now and are very snappy
Ubuntu Software Center (I'll admit it's been months since I've even tried, as I've all but given up using this slow and buggy program since Oneiric)
Post your results with app responsiveness (or lack thereof) in Saucy...