Mine

muthane@muthane:~$ uname -r
2.6.22-14-generic
muthane@muthane:~$ cat /proc/driver/nvidia/agp/host-bridge
Host Bridge:     PCI device 1106:0204
Fast Writes:     Not Supported
SBA:             Supported
AGP Rates:       8x 4x 
Registers:       0x1f000a0b:0x00000b02
muthane@muthane:~$ lspci | grep VGA | grep nVidia
01:00.0 VGA compatible controller: nVidia Corporation NV44A [GeForce 6200] (rev a1)
muthane@muthane:~$ cat /proc/driver/nvidia/agp/status
Status:          Enabled
Driver:          AGPGART
AGP Rate:        8x
Fast Writes:     Disabled
SBA:             Enabled
muthane@muthane:~$