Problem: If I try to load the usb-uhci or uhci module from the default RH7 kernel (2.2.16-22) or from custom kernels built from 2.2.16 or 2.2.18 kernel sources, then my system will crash (always, without fail). When this happens, the system is completely frozen: network, keyboard, and mouse input have no effect, and system logging is halted. The only way to recover is by hitting the power switch. Hardware: Dell Inspiron 3200 laptop. From "lspci": the usb controller is Intel 82371AB PIIX4 (rev 01). Solution: I solved this problem by building Kernel & modules from the 2.4.0-test12 sources. The usb-uhci/uhci modules built from the 2.4.0-test12 source do not crash the system.
*** Bug 36993 has been marked as a duplicate of this bug. ***
I am afraid a migration to 7.3 is in order. Refile if problem persists.