Kernel panic caused by wireless card, or the USB hub it is attached to?

running 10.5.8 here. i've got alfa awus036h usb wireless card plugged usb hub built dell monitor.

every often, stops connecting network. can't turn on , off again, unplugging causes kernel panic, shutting down causes computer hang after logging out on blank screen , makes fans run @ full speed after while (really loud.)

anyway, i'm wondering if it's actual card that's problem, or if it's fact it's plugged usb port in monitor usb hub.

code in bold made me wonder:

code:

interval since last panic report:  621351 sec panics since last report:          2 anonymous uuid:                    [edited]  tue feb  7 18:54:17 2012 panic(cpu 0 caller 0x000acf54): enable_preemption: preemption_level -1  latest stack backtrace cpu 0:       backtrace:          0x0009cc88 0x0009d63c 0x00029da0 0x000acf54 0x00ca7780 0x00caa048 0x00caa1f0 0x00ca8b70           0x00ca4f6c 0x00ca5e34 0x00344d70 0x0035b9d0 0x0034b888 0x0034bb80 0x0034c390 0x0050e990           0x00c71adc 0x00c71d64 0x00c6b1c8 0x00c6fc28 0x0051adc8 0x00c6db7c 0x00350114 0x003504d8           0x0003f2a0 0x000b1dd4        kernel loadable modules in backtrace (with dependencies):          com.realtek.driver.rtl8187(1.0)@0xca2000->0xd1ffff             dependency: com.apple.iokit.ionetworkingfamily(1.6.1)@0xa3f000            [b] dependency: com.apple.iokit.iousbfamily(3.5.2)@0x4fd000          com.apple.driver.appleusbhub(3.4.9)@0xc69000->0xc78fff             dependency: com.apple.iokit.iousbfamily(3.5.2)@0x4fd000          com.apple.iokit.iousbfamily(3.5.2)@0x4fd000->0x533fff proceeding via exception chain: [/b]   exception state (sv=0x550acc80)       pc=0x00000000; msr=0x0000d030; dar=0x00000000; dsisr=0x00000000; lr=0x00000000; r1=0x00000000; xcp=0x00000000 (unknown)  bsd process name corresponding current thread: kernel_task

 

usb not great this, , yes think it's card.

 

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