http://www.av-comparatives.org/images/stories/test/ondret/avc_od_aug2011.pdf
avast! got A+ again. 8)
avast!'s result is still very good, but other competitors also got very good result (even higher than avast).
The false positives are also an eye opener.
avast!'s result is good but why avira(false positives is few) %99.5 , avast %97.2 ?
panda got impressive results, with almost no false positives.
For the ones who are tempted by the name cloud… Remember, it will bring problems if you run side by side with avast http://forum.avast.com/index.php?topic=65725.msg554987#msg554987
panda cloud is a full blown AV, it cannot be run together with any antivirus. if you read the details about this, “cloud” is the next intelligent solution.
i want to see avast’s results after getting cloud technology muhahaha 
avast! will be much better in catching 0day threats 
BTW there are another comparation avast with paid products http://www.avast.com/best-antivirus - avast! is better than norton! nice!
That only shows
– select product --AVGAviraESETF-SecureKasperskyMcAfeeMicrosoftSophosSymantec/NortonWebrootCAQuick Heal
– select test --Virus Buletin 2011/04Virus Buletin 2010/08AV Comparatives 2011/02AV Comparatives 2010/08
Actually tested:avast! Free Antivirus 6.0.1000
So it did not use the latest avast! 6.0.1289 for comparison.