Many thanks!
Just needed to
$ export ALSA_LIBS=/usr/src/Alsa-1.0.19/alsa-lib-1.0.19
to get through the whole thing.
1. Ubuntu 8.10
2. 2.6.27-11-generic
3. 1.0.19
4. AlsaUpgrade-1.0.x-rev-1.16.sh
5. Nothing, just experienced noise in left channel after a while
6. The relevant log entry is this: "No package 'alsa' found"..." you may set the environment variables ALSA_CFLAGS and ALSA_LIBS "
EDIT: It did not solve my noise problem though. It actually got wors eand now noise starts just after startup instead of a after a short while :-/