iBook app slow for anyone else too?

[sepehrsh]

I have noticed when i try to use my ibook app its running slow. This is happening on my iphone 4, and old 3GS. Its especially noticeable when you flip books to horizontal to read, it takes it a good few seconds to flip over.

i know seconds is not a big deal, but in any other app when i turn the phone it immediately flips over the screen. And i remember when i first got the ibook app it wasn't like this. more recent thing, and happening on both phones. so i don't is this a software bug?

anyone else with this issue?