Hello
I have the same problem.
I have captured a video which describes the problem:
http://www.youtube.com/watch?v=v-UOfQRr5EI
I don't see errors at the ftp session log. It just hang (about 60 seconds!) while listing the directory. It is very annoying.
Flashfxp 4.2.5 build 1813
Win 7
Thanks