Volume button mutes the sound completely with one push only! Please Help

[chbisio]

It should be reversible if someone knows a way to install a previous version of a tweak in Cydia (I searched inside the Cydia app but found no way).

 

[chbisio]

Have contacted BigBoss from thebigboss.org and he didn't answer with help, he said it was unrelated to the latest updates for iOS5 compatibility.
So we are in the dark now... we'll have to hopeless wait for the next update to fix it...