Comment 150 for bug 197762

Night64:

No, you're using usb-storage device driver for both the pendrive and the ipod. The messages that you quoted as coming from the ipod just means that the usb-storage module had gotten unloaded, and when it was loaded as a module, it prints those lines to the kernel log. The fact that things were fast going to the ipod and variable when you write to the your USB flash device tends to indicate that the problem is specific to the flash device; it might just be that the flash device is sometimes slower because writing to flash can be slower sometimes, and it might be exacerbated by the FAT filesystem, which is never known as a speed demon.

Note that this might not be true for other users on this bug report --- which is why I've suggested everyone file separate bug reports. People using Ubuntu 8.10 might possibly have been using the Low Performance USB storage driver, which Canonical inexplicably configured into older Ubuntu kernels. Anyone using that will definitely see massive performance problems --- and this has been known for ages. (Another reason why many kernel developers aren't happy trying to clear up Ubuntu-specific bugs....) In any case, this kernel configuration bug doesn't seem to be a problem for Ubuntu 9.04; libusual.ko doesn't appear to be built any more, which is a Very Good Thing. Some users from a year ago who might have been using the low performance USB driver might have a very different problem than yours --- which is why it's better for each user to open separate bug reports.

Remember that most of the people with the experience and knowledge to help are volunteers. If Ubuntu users continue to make life difficult, kernel developers will simply stop volunteering to wade through the cesspit of Ubuntu launchpad bugs....