Hi. I have replaced the 0.5.x build of pcmanfm with the so called pcmanfm2 (0.9.x build), and I have similar issues to those reported in the O.P. .
I don't see my USB stick in the left panel, and any of my Windows partitions, mounted or unmounted.
If I click the Trash icon, the "Operation not supported" popup appears; the same happens if I select My Computer from PCManFM menu.
Installing gnome-vfs didn't help at all.
I also had the issue with the desktop - it was not being managed, but I fixed that by replacing 'pcmanfm -d &' with 'pamanfm --desktop &' in autostart.sh .
Looking for solutions on the internet didn't reveal anything useful for Slitaz, the only relevant solutions were for Arch, as I recall.
Did anyone have any success with pcmanfm2 and can share some informations on how I can fix my issues ?