Oscillator detunes up / battery input drops ?

[Sprak]

When I turn on the power of my Soundlab, the first oscillator detunes up for like half a minute, before settling down. It's not much, but you definitely notice it. It goes up about half a note, and the voltage at the + and - of the battery input drops with like 0.01-0.02V per second... Is this normal?

[edit: chanced the subject to be more informative. old subject: (Weeooo....ooo! (...?)) .dnny]

[Uncle Krunkus]

1. Is the battery new?
2. Does everything else work okay?
3. How much current is being drawn out of the battery?
A fault somewhere else could be rapidly draining the battery.
Apart from that I'd be checking the polarity of electrolytics first.