Google has confirmed that Android 4.0 on the Galaxy Nexus a bug which users have problems with the volume can be affected. Google says already have a solution for the problem, which will soon be rolled out.
A few days back although the problem was at Google, addressed. On the codesite Google, but also on forums, talked to users about the bug and asked himself whether the cause is in the software or in the hardware lag. Now that Google has identified by a patch to come, it seems that the error is in the firmware. However, it is also possible that Google the software is adapted to get around a hardware problem. Not yet known when the fix is rolled out; Google speaks of as fast as possible.