il risultato di uname -r è

root@debianbox:~# uname -r
2.6.3
root@debianbox:~#

ho ridato apt-cache search kernel-sources

questo il risultato:

freeswan - IPSEC utilities for FreeSWan
kernel-patch-2.2-lids - LIDS Kernel Patch
kernel-patch-2.4-lids - LIDS Kernel Patch
kernel-patch-debian-2.4.21 - Debian patches to Linux 2.4.21
kernel-patch-debian-2.4.22 - Debian patches to Linux 2.4.22
kernel-patch-debian-2.4.24 - Debian patches to Linux 2.4.24
kernel-patch-debian-2.4.25 - Debian patches to Linux 2.4.25
kernel-patch-debian-2.6.3 - Debian patches to Linux 2.6.3
kernel-patch-debian-2.6.4 - Debian patches to Linux 2.6.4
kernel-patch-debian-2.6.5 - Debian patches to Linux 2.6.5
kernel-patch-usagi - Another IPv6 implementation for Linux
kernel-source-2.2.25 - Linux kernel source for version 2.2.25
kernel-source-2.4.19 - Linux kernel source for version 2.4.19
kernel-source-2.4.20 - Linux kernel source for version 2.4.20 with Debian patches
kernel-source-2.4.21 - Linux kernel source for version 2.4.21 with Debian patches
kernel-source-2.4.22 - Linux kernel source for version 2.4.22 with Debian patches
kernel-source-2.4.24 - Linux kernel source for version 2.4.24 with Debian patches
kernel-source-2.4.25 - Linux kernel source for version 2.4.25 with Debian patches
kernel-source-2.6.3 - Linux kernel source for version 2.6.3 with Debian patches
kernel-source-2.6.4 - Linux kernel source for version 2.6.4 with Debian patches
kernel-source-2.6.5 - Linux kernel source for version 2.6.5 with Debian patches
lidstools-2.2 - LIDS Admintool
lidstools-2.4 - LIDS Admintool
oprofile - system-wide profiler for x86/ia64 systems
nvidia-glx - NVIDIA binary XFree86 4.x driver
nvidia-kernel-source - NVIDIA binary kernel module source
------------------------------------------------------------

ed ho installo apt-get install kernel-source-2.6.3

ma mi da sempre lo stesso identico errore