When shutdown Lotus Notes it needs some time to end all tasks - when you restart Notes in this time, it will be slow in startup. Bring a progress bar to show that client is shuting down (or close tasks immediately).
In R8 there are plenty of new features added which are quite impressive ( though they are small ). Today while design replace i found you can click on the little orange bulb at the bottom right corner of your workspace . Which gives you progress bar tab to watch ...