You can install the previous kernel easily, but there is no assurance that all of your system will work as it should
For 32bit-Intrepid Ibex(8.10)
mkdir kernel&&cd ./kernel&&wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30.10/linux-headers-2.6.30-02063010-generic_2.6.30-02063010_i386.deb&&wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30.10/linux-image-2.6.30-02063010-generic_2.6.30-02063010_i386.deb&&sudo dpkg -i *.deb
For 64bit-Intrepid Ibex(8.10)
mkdir kernel&&cd ./kernel&&wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30.10/linux-image-2.6.30-02063010-generic_2.6.30-02063010_amd64.deb&&wget http://kernel.ubuntu.com/~kernel-ppa/mainline/v2.6.30.10/linux-headers-2.6.30-02063010-generic_2.6.30-02063010_amd64.deb&&sudo dpkg -i *.deb
You can then select the kernel at the grub screen...
processor32 or 64 bits? – Amith KK Feb 12 '12 at 10:59