Desktop is being blocked - neverending story

[GizmoPlushie]

I don't know how it happened, but every time I start Knoppix:

- the Desktop is blocked from changes
- I can't right click elsewhere the icons (no menu is showed),
- can't arrange icons on the desktop in Knoppix 6.2
- can't even see the miniatures
- all effects are down

The only one time I can see it UNLOCKED is the time I try to use Ctrl+V shortcut when copying something from my cell phone to the unfunny desktop.

I use Knoppix 6.2 for 2 months with this bad distro. I didn't changed anything important.

What went wrong? Is it just big blow up of LXDE (experimental) or something else?