In Feisty, I was pleasantly surprised to find my Belkin F5D6050 USB wireless adaptor worked perfectly as soon as I plugged it in. However, today I upgraded to Gutsy, and had a terrible time. The install process went flawlessly, but on reboot the Ubuntu progress bar just stalled at around 10% and nothing happened. After much investigation with a rescue disk, I was still at a complete loss, but since the system logs seemed to suggest the last actions the computer would take before freezing involved the wireless card, I took the hint, unplugged it, and... suddenly I can boot.
Right now, if I boot with the device plugged in, the system will freeze before it can start. If I plug it in after the system is already booted, the system will go unresponsive immediately.
By removing the wireless adaptor, I was able to get my computer to boot normally. The progress bar still pauses for a long time at about 10%, but it eventually does move on. My best guess is that this is the system trying to establish a network connection without any network adaptor and timing out.
My computer is amd64 based, just for the record.
I'm not sure what exactly broke on the upgrade from Feisty to Gutsy, but I imagine it must either be the wireless driver or the kernel itself.
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