Graphical corruption in Framebuffer Object, Framebuffer Object 2 and Textures examples

KSnapshots: http://img822.imageshack.us/g/textures.png/

Mesa debug build does not show any errors:
$ qtdemo
Mesa: CPU vendor: AuthenticAMD
Mesa: CPU name: mobile AMD Athlon(tm) XP 2200+
Mesa: Mesa 7.9-devel DEBUG build Aug 21 2010 23:05:40
Mesa warning: software DXTn compression/decompression available
Mesa: MMX cpu detected.
Mesa: 3DNow! cpu detected.
Mesa: SSE cpu detected.
Mesa: Not testing OS support for SSE, leaving enabled.
Mesa warning: software DXTn compression/decompression available
Mesa: MMX cpu detected.
Mesa: 3DNow! cpu detected.
Mesa: SSE cpu detected.
Mesa: Not testing OS support for SSE, leaving enabled.

$ lspci -vv
[...]
01:00.0 VGA compatible controller: ATI Technologies Inc Radeon RV250 [Mobility FireGL 9000] (rev 01) (prog-if 00 [VGA controller])
Subsystem: Uniwill Computer Corp Device 2302
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: 32 (2000ns min), Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 11
Region 0: Memory at d0000000 (32-bit, prefetchable) [size=128M]
Region 1: I/O ports at c800 [size=256]
Region 2: Memory at dfef0000 (32-bit, non-prefetchable) [size=64K]
Expansion ROM at dfec0000 [disabled] [size=128K]
Capabilities: [58] AGP version 2.0
Status: RQ=48 Iso- ArqSz=0 Cal=0 SBA+ ITACoh- GART64- HTrans- 64bit- FW+ AGP3- Rate=x1,x2,x4
Command: RQ=32 ArqSz=0 Cal=0 SBA+ AGP+ GART64- 64bit- FW- Rate=x4
Capabilities: [50] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: radeon