I am running .23 on a Asus WL-520gU and have not had a problem, although no interruptions in service the last week or so since I got it up and working. Took me a few days to get QoS set up, but since then no issues at all with call quality or anything else.

My set up is bridged DSL modem(2wire) -> Asus 520gU -> PAP2T.