webcam disappears!

Hi, I installed OSuse 11.1 on a lenovo 3000 n200 from the live version and the webcam worked…now that everything is right set on the harddisk it doesn’t work anymore! I don’t understand why…

lsusb detect it rigth:

Bus 007 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 006 Device 003: ID 0a5c:2101 Broadcom Corp. A-Link BlueUsbA2 Bluetooth
Bus 006 Device 002: ID 046d:c50e Logitech, Inc. MX-1000 Cordless Mouse Receiver
Bus 006 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 002: ID 08ff:2580 AuthenTec, Inc. AES2501 Fingerprint Sensor
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 003: ID 04f2:b013 Chicony Electronics Co., Ltd USB 2.0 Camera
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

but if I launch “cheese”
(cheese:5625): GStreamer-WARNING **: Failed to load plugin ‘/usr/lib/gstreamer-0.10/libgstcacasink.so’: /usr/lib/gstreamer-0.10/libgstcacasink.so: undefined symbol: caca_dither_bitmap

ideas?

Thnk you