Oh yeah, need to ask them about the loss of power/real sluggishness I get in second gear several times a week. I've only noticed it on the 1-2 shift, but right after the shift it feels like I'm driving through tar or something, it's really sluggish, then all of a sudden the RPMs pick up and she takes off again. It doesn't seem to matter how much the gas pedal is depressed either, as it has done it with the pedal to the metal, and with it just in normally. So weird.
My Astra used to do this with pretty much every upshift, and the dealership ended up doing something to the solenoid filter if I remember right. It helped for a bit, and then I gave up and traded it in for the MINI. Much better choice. I hated that Astra.