I have installed wubi 8.04 on my pc with the following specs:
Pentium 4 HT 3.06 Ghz
512 MB RAM
ATI 128 MB Sapphire Radeon 300XSE graphics card
it is really slow and jerky when trying to multitask even with just 2 tasks e.g. updating and browsing.
i installed the zen kernel and it is not showing up in grub menu.