iPhone 4S "lock" sound gets really loud sometimes?

[LiveFreeDie]

On my 4S when I lock my phone sometimes the lock sound gets really loud even though my ringer volume is almost all the way down.

I was wondering if anyone else was experiencing this.

 

[Don Kosak]

I've seen reports that Siri can cause your volume to temporarily be set higher.

Some people say it goes back to normal after 10-15 seconds.

Others say they can tap up or down on the volume button to reset it to normal.

It appears to be a known bug at this point.

 

[h00ligan]

It's a Siri bug. And it does return to normal shortly after.

 

[salesguy]

It's a Siri bug. And it does return to normal shortly after.

This.

 

[S.B.G]

Wirelessly posted (iPhone 4S: Mozilla/5.0 (iPhone; CPU iPhone OS 5_0 like Mac OS X) AppleWebKit/534.46 (KHTML, like Gecko) Version/5.1 Mobile/9A334 Safari/7534.48.3)

I've noticed this too. I think it has something to do with Siri. There's another thread going on around about it also. (This message dictated by Siri.)