Yep, I definitely think so. Bookmarking something to the homescreen takes at least 4+ sec's, changing the wallpaper took at least 7 secs, sliding through emails

Yep, I definitely think so. Bookmarking something to the homescreen takes at least 4+ sec's, changing the wallpaper took at least 7 secs, sliding through emails now has hickups, etc. iPhone 4 already ordered ;-D