You can give the sound card a dedicated interrupt by editing
/etc/modprobe.d/alsa-base.confand adding the following line:
options snd_hda_intel enable_msi=1(source from Eeebuntu forums).
You can also accelerate the boot time by letting the kernel do some optimizations for the boot process as described in the corresponding Fastboot entry in the Eeebuntuwiki.
If you have any other suggestion on ho to improve the performance n Eeebuntu for EEEPCs, please post a comment.