I recently switched to the dual-boot firmware for my iaudio X5 player (I downloaded the latest rockbox firmware).
The rocbox firmware does not seem to support the "Bookmarks" feature (or I don't know how to access it)
1. I changed the settings to say "bookmark on stop" to yes (also tried "ask", but it did not ask me)
2. I tried to create bookmark, but it did not seem to (there is nothing in the "Recent bookmarks" list).
I really like the rockbox interface and would like to use it, but without bookmarks, it'll be bit of a pain