Mouse error with multiple screen

Question

12.04 here using ATI/AMD proprietary drivers. When I move mouse from 2nd screen to main screen I get the mouse icon corrupted as shown in the image. My graphic card is

       *-display
            description: VGA compatible controller
            product: Manhattan [Mobility Radeon HD 5400 Series]
            vendor: Hynix Semiconductor (Hyundai Electronics)
            physical id: 0
            bus info: pci@0000:01:00.0
            version: 00
            width: 64 bits
            clock: 33MHz
            capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
            configuration: driver=fglrx_pci latency=0
            resources: irq:50 memory:c0000000-cfffffff memory:d4500000-d451ffff ioport:5000(size=256) memory:d4540000-d455ffff

here the screenshot -> https://docs.google.com/file/d/0BzUsxTdTGMEESjJISTczUy1ZQjA/edit?usp=sharing