Found a patch on vim.org, adding GtkFileChooser support to gvim. Would be nice, if you integrate that patch soon - for perfect GNOME 2.6 experience. Reproducible: Always Steps to Reproduce:
Please reopen when gtk+2.4.1 or later is stable on all gvim-supported archs. Can't apply this until then, because it'll involve upping the GTK+ RDEPEND to avoid breaking GRP and the like.
*** Bug 52815 has been marked as a duplicate of this bug. ***
Reopening
Changing this from LATER to UPSTREAM. Support for the new Gtk+ dialogs is on the TODO list and will probably be included in vim7.