I believe I have a solution for you.
You have to use the final update released from Conectiva 11 March.
This is the filename: cl10upd1-final.iso
Here is the link to the FTP site:http://espelhos.edugraf.ufsc.br/conectiva/10/
Rather then recompile the source and the drivers; what you should have done is
downloaded the final update patch and apply that to the original installation kernel.
Then once you've already updated kernel to the 2.6 .11 kernel version you could use apt-get to apply the most recent updates and patches.
I have used this update method and I have not had any problems. I did notice however that the default option in the grub2 boot loader is not updated when you apply the patch. You have to manually configure the default the boot loader option using webmin or the command line.
The new kernel version is usually the top choice in the grub2 options menu.
I hope you have backups of all your work especially your Linux configuration before the application of the updates because this will make it easier for you to undo the damage that the most recent updates have caused.