|We have been making some upgrades in our update infrastructure due to the higher than expected demand for the new version AVG2011. These changes caused some hickups and at certain times, the update servers have been overloaded. Should be fixed by now|
BTW - you should definitely consider upgrading to AVG2011, it's detection and speed have been further significantly improved and the upgrade is free.
Note: I work for AVG so consider all my posts biased in this respect, please ;)