Please help! I rely heavily on my palm pilot and jpilot! I used to be able to sync my Palm Tungsten C, running the english version of update 3, on Fedora Core 2 over usb. I would have to unload and reload kernel modules from time to time, but that was about as serious as the problems got. Now that I've moved to Fedora Core 3, my home system sync's and backs up my Tungsten C well (still have to unload and reload modules sometimes), but my FC3 system at work is crashing during sync's sometimes, and backups always. Sometimes after the crash, the FC3 system at work fails to reboot afterward! I've found that if I boot single user in such an instance, and re-mkswap my swap partitions, then I can boot back up again. But sync and backup of my palm continue to be very unusable. I'm using a device file at /etc/udev/devices/ttyUSB1. The file attributes are: tesuji-strombrg> ls -l /etc/udev/devices/ttyUSB1 crw-r--r-- 1 strombrg root 188, 1 2004-11-15 17:24 /etc/udev/devices/ttyUSB1 Some files are sync'd, but eventually, my machine crashes hard - I can't even ping it, and the mouse doesn't budge a millimeter. For sync'ing software, I've tried both the version of jpilot that comes with FC3, and: pilot-xfer --port /etc/udev/devices/ttyUSB1 --backup . ...both crash hard. My usb controllers on the troubled machine look as follows in lspci -v: 00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1a) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller Flags: bus master, medium devsel, latency 32, IRQ 10 I/O ports at d400 [size=32] Capabilities: [80] Power Management version 2 00:07.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1a) (prog-if 00 [UHCI]) Subsystem: VIA Technologies, Inc. (Wrong ID) USB Controller Flags: bus master, medium devsel, latency 32, IRQ 10 I/O ports at d800 [size=32] Capabilities: [80] Power Management version 2 My USB controllers on the FC3 system that is (mostly) working, are as follows: 00:01.2 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 07) (prog-if 10 [OHCI]) Subsystem: Silicon Integrated Systems [SiS] USB 1.0 Controller Flags: bus master, medium devsel, latency 64, IRQ 3 Memory at cfffc000 (32-bit, non-prefetchable) [size=4K] 00:01.3 USB Controller: Silicon Integrated Systems [SiS] USB 1.0 Controller (rev 07) (prog-if 10 [OHCI]) Subsystem: Silicon Integrated Systems [SiS] Onboard USB Controller Flags: bus master, medium devsel, latency 64, IRQ 3 Memory at cfffd000 (32-bit, non-prefetchable) [size=4K] I've tried sync'ing both with (as of yesterday) a "yum -y update" and without a yum update on the troubled machine, and both crash hard, consistently. Could this be an OHCI vs UHCI issue? Am I correct in assuming that these use two different drivers? Is one known to be more stable than the other on FC3? Thanks for -any- suggestions or hints you can provide, no matter how large or small!