Hi, I have a new install of FC3 on a Packard Bell iMedia I4606 which gives a kernel panic after the first yum upgrade. Nothing else has been added or done to the system apart from install and the first yum... The hardware is Celeron/ Intel 810E2 chipset with 82801BA/M I/O controller (ICH2 -M) Full hardware spec is at http://support.packardbell.com/uk/m...nr=010694420286 The system works fine with the 2.6.9-1.681_FC3 kernel, however if I boot it with upgraded 2.6.12-1.1372 kernel the system halts with the message:- "Kernel panic - not syncing: drivers/serial/8250.c:1305 spin_is locked on uninitialized spinlock c047ed64. (Not tainted)" Googling around there are a couple of similar bugzilla reports for both FC3 and FC4 with no suggestions or resolution, there are also a few other items relating to "Deadlock in serial driver 2.6.x" which look relevant. Has anyone else came across this or have any suggestions? Thanks, Chris