I upgraded the arch kernel to 2.6.26 and ndiswrapper went bonkers, locking up my computer and what not. It just didn't know how to downgrade to the 2.6.25 kernel and ndiswrapper 1.52.
After a while the kernel got upgraded and so did ndiswrapper to 1.53. Well, this brought some reliability, but not much. If too many connections were made the system would lock up.
Today I finally succeeded to downgrade. I found an answer to downgrading in arch, which solved my question. Basically, Arch doesn't have have a downgrade functionality "per se" because older packages are not kept in the repository. However, if you didn't clean up the pacman cache you can downgrade.
The cached packages are in /var/cache/pacman/pkg. Then you will have to do a pacman -U kernel-2.6.25.. I had also virtualbox-ose and ndiswrapper-1.53 that were conflicting with that install.
You will have to manually remove the ndiswrapper and ndiswrapper-utils (with pacman -R of course), and then install the kernel, and finally put back in the older versions of ndiswrapper and virtualbox.
Yeay, back to stability.
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