Tvheadend

I have the following Tvheadend installation:
• Ubuntu server 12.04
• Kernel version 3.2.0-29-generic x86_64
• KNC1 TV-Station DVB-S2 Twin card
http://knc1.de/d/produkte/digital_dvb_s2_twin.htm

KNC1 are providing a Linux driver on their homepage http://knc1.de/d/download/digital.htm#linux.

Configuring the DVB-S2 card in TVheadend works fine, and I’m able to scan for Muxes and services. It’s even possible to bring TV to the screen via XBMC.

But here it ends. The system is not able to show the picture in proper quality. HDTV is useless – even standard TV resolution is not acceptable.

syslog is logging a lot of the following entries:
Sep 3 07:03:10 ubtv01 tvheadend¹⁰⁷⁶: TS: STV090x Multistandard/11,836,500 kHz Horizontal (No satconf)/Das Erste: MPEG2VIDEO #101: Continuity counter error, 10 dup$
Sep 3 07:03:10 ubtv01 tvheadend[1076]: TS: STV090x Multistandard/11,836,500 kHz Horizontal (No satconf)/Das Erste: TELETEXT #104: Continuity counter error

lspci –vv gives the following output:
04:00.0 Multimedia controller: Philips Semiconductors SAA7160 (rev 02)
Subsystem: KNC One Device 0210
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: 0, Cache Line Size: 32 bytes
Interrupt: pin A routed to IRQ 16
Region 0: Memory at f6a00000 (64-bit, non-prefetchable) [size=1M]
Capabilities: [40] MSI: Enable- Count=1/32 Maskable- 64bit+
Address: 0000000000000000 Data: 0000
Capabilities: [50] Express (v1) Endpoint, MSI 00
DevCap: MaxPayload 128 bytes, PhantFunc 0, Latency L0s <256ns, L1 <1us
ExtTag- AttnBtn- AttnInd- PwrInd- RBE- FLReset-
DevCtl: Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop-
MaxPayload 128 bytes, MaxReadReq 128 bytes
DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr- TransPend-
LnkCap: Port #1, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <4us, L1 <64us
ClockPM- Surprise- LLActRep- BwNot-
LnkCtl: ASPM Disabled; RCB 128 bytes Disabled- Retrain- CommClk-
ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
LnkSta: Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk- DLActive- BWMgmt- ABWMgmt-
Capabilities: [74] Power Management version 2
Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA PME
Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [80] Vendor Specific Information: Len=50
Capabilities: [100 v1] Vendor Specific Information: ID=0000 Rev=0 Len=088
Kernel driver in use: SAA716x Budget
Kernel modules: saa716x_budget

Anybody out there having experience with the TV-Station DVB-S2 Twin?

Any suggestions how to proceed from here?
Thanks!