USB mouse problems in (2.6.12-rc6)

[Nick Piggin <nickpiggin@yahoo.com.au>]

Both 2.6.12-rc6 and rc6-mm1 make the mouse move around very strangely.
Very noticable lag and infrequent updates of the position.

System is a dual PIII. Some more info below. Anyone got any ideas or
patches to try? Thanks.

           CPU0       CPU1
  0:     356256     420442    IO-APIC-edge  timer
  1:        715       1563    IO-APIC-edge  i8042
  9:          0          0   IO-APIC-level  acpi
 14:       4555       2951    IO-APIC-edge  ide0
 15:         54          6    IO-APIC-edge  ide1
 17:        996        436   IO-APIC-level  SysKonnect SK-98xx
 18:        584       1071   IO-APIC-level  uhci_hcd:usb1, uhci_hcd:usb2

0000:00:00.0 Host bridge: VIA Technologies, Inc. VT82C693A/694x [Apollo PRO133x] (rev c4)
0000:00:01.0 PCI bridge: VIA Technologies, Inc. VT82C598/694x [Apollo MVP3/Pro133x AGP]
0000:00:07.0 ISA bridge: VIA Technologies, Inc. VT82C686 [Apollo Super South] (rev 40)
0000:00:07.1 IDE interface: VIA Technologies, Inc. VT82C586A/B/VT82C686/A/B/VT823x/A/C PIPC Bus Master IDE (rev 06)
0000:00:07.2 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1a)
0000:00:07.3 USB Controller: VIA Technologies, Inc. VT82xxxxx UHCI USB 1.1 Controller (rev 1a)
0000:00:07.4 SMBus: VIA Technologies, Inc. VT82C686 [Apollo Super ACPI] (rev 40)0000:00:07.5 Multimedia audio controller: VIA Technologies, Inc. VT82C686 AC97 Audio Controller (rev 50)
0000:00:0a.0 Ethernet controller: National Semiconductor Corporation DP83815 (MacPhyter) Ethernet Controller
0000:00:0b.0 Ethernet controller: D-Link System Inc Gigabit Ethernet Adapter (rev 11)
0000:01:00.0 VGA compatible controller: nVidia Corporation NV5M64 [RIVA TNT2 Model 64/Model 64 Pro] (rev 15)

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