Ubuntu Multimedia :: NVidia Quadro NVS 110M Difficult To Identify

I come here every two or three years, when I have some troubles with my graphic card. Indeed, once again. Since last Tuesday, I experience some system freeze. Since yesterday, I must run on low graphic mode. As there has not been any X.org or driver update, I suspect that my graphic card is running down. But I do not know how to diagnose this.

My configuration:
-- Dell Latitude D820 laptop;
-- processor Intel Core 2 Duo T7200 (2.0GHz 667MHz FSB);
-- bi-canal 2x1024Mo DDR2-SDRAM 533MHz memory;
-- graphic card NVIDIA Quadro NVS 110M 256MB;
-- 15.4" WSXGGA+ (1680 x 1050) LCD screen;
-- 100Go SATA (7200 TPM)) hard-drive;
-- 8x DVD +/- RW burner;
-- battery 9 cells 85 WHr LI-ION;
-- Bluetooth card for Latitude;
-- Intel PRO/Wireless 3945 802.11a/g;
-- Ubuntu Linux 9.04 Jaunty Jackalope desktop 64 bits real-time kernel.

Some commands results:
Code:
$ lspci | grep -i vga
01:00.0 VGA compatible controller: nVidia Corporation G72M [Quadro NVS 110M/GeForce Go 7300] (rev a1) .....