Comment 25 for bug 262631

Also attached my Xorg.0.log here

and for completeness sake:
01:00.0 VGA compatible controller: ATI Technologies Inc RV350 [Mobility Radeon 9600 M10]
 Subsystem: IBM Device 0550
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B+ DisINTx-
 Status: Cap+ 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 66 (2000ns min), Cache Line Size: 32 bytes
 Interrupt: pin A routed to IRQ 11
 Region 0: Memory at e0000000 (32-bit, prefetchable) [size=128M]
 Region 1: I/O ports at 3000 [size=256]
 Region 2: Memory at c0100000 (32-bit, non-prefetchable) [size=64K]
 [virtual] Expansion ROM at c0120000 [disabled] [size=128K]
 Capabilities: <access denied>
 Kernel modules: radeon, radeonfb

00:01.0 PCI bridge: Intel Corporation 82855PM Processor to AGP Controller (rev 03)
 Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
 Status: Cap- 66MHz+ UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 96
 Bus: primary=00, secondary=01, subordinate=01, sec-latency=64
 I/O behind bridge: 00003000-00003fff
 Memory behind bridge: c0100000-c01fffff
 Prefetchable memory behind bridge: e0000000-e7ffffff
 Secondary status: 66MHz+ FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort+ <SERR- <PERR-
 BridgeCtl: Parity- SERR- NoISA+ VGA+ MAbort- >Reset- FastB2B-
  PriDiscTmr- SecDiscTmr- DiscTmrStat- DiscTmrSERREn-
 Kernel modules: shpchp

The two important entries from lspci.
I dunno if it really matters that AGP is stuck in 1x mode, I forced it into agp 4x mode via my xorg.conf ages ago and it 'felt' smoother on the desktop, but that may be a placebo very well. Switching between virtual desktops is just doomed to be slow :p