Comment 260 for bug 131094

I've just had a very annoying experience: on notebook (running up-to-date ubuntu 9.10, 32 bit) I wanted to copy a large file onto a pendrive. Normally, - I think - it shouldn't affect the I/O performance too much, since that pendrive is quite slow, so I doubt that it can make the hdd (I was copying from) or any other I/O subsystem too busy other than the pendrive itself. However it almost killed the notebook: I couldn't change windows, alt-tab required 10 minutes (!) to react. Without any I/O of course I have no usability problems with it. Nothing interesting in the kernel log ...