Well, Leopards' performance graphically (expose, spaces, dock, etc.) and its slow response on some stuff is widely discussed in this forum, so many people are opting for reinstalling it to see if that helps.
As you know you can install Leopard through various methods (upgrade, archive and install, erase and install). The purpose of this poll is to help those of us that are debating whether this is a road worth pursuing.
I haven't tried reinstalling, but my first installation was a format and clean install, and the performance on my iBook is now pretty bad. After closing the lid, it now takes 30 seconds to a minute to go into sleep mode. With Tiger, this was instantaneous.
i archived and installed first time. booted in and made an immediate time machine backup. played around for 24 hours with the archive and install and noticed that certain things mainly graphic wise- the dock, finder windows (more than graphics maybe on finder), etc. were sort of choppy. also had some apps like mail and safari hang.
i've only had this imac (the white one, one of the last before the aluminum hit the shelves) since july when i bought it at the sherman oaks store brand new. so i thought an archiv would be fine for me.
not satisfied with the choppiness, i did an erase and install and immediately noticed a big difference. FWIW i used migration utility to reimport my network/ mail setting in and my apps from my time machine backup i had made earlier. the graphics choppiness disappeared and the system is very responsive. much more than it was with the archive and install.
i really like leopard. of course there are a few issues, but i can see that the minor issues i have are/ or should be easily remedied with future updates. which i hope are released quickly.