Upfront deets: MacBook Pro 17" 2.5 Ghz Airport Express Base Station with AirTunes (M9470LL/A) puchaesd Feb 29, 2008 from Apple Online Random Wi-Fi drop outs, sometimes unable to reconnect without shutting down the power book and waiting. Hi everyone - I recently helped a friend buy and set up a 17-inch MacBook pro and everything has gone well except for this frustrating wi-fi drop out issue. We've got her set up about 10 feet away from an Airport Express router also purchased at the same time from Apple Online at the end of February. I asked her to monitor when the drops outs are occurring but they seem random, not just when the computer goes to sleep. She complains that the net will drop out while she's surfing. She doesn't move the laptop anywhere, so it's strange to hear that the signal bars (which I hear now measure data rate and not signal strength - is that true?) Sometimes she is able to reconnect (I had to show her how to manually join her closed network again via the Airport menu bar) but she says that sometimes she has to completely shut down one or twice or wait for half an hour before the net will come back again. I'm fairly certain it isn't the AEX router, as she doesn't have to unplug or restart it, only the MacBook Pro itself or Leopard specifically on the MacBook Pro. I've switched the router to only operate on g vs b/g - and that hasn't done anything to curb the problem. My next step is to try setting the channel to 1, 6 or 11, as some have suggested, but I'm curious if there are any more solutions. I may try switching the router for her, just to see if I can eliminate the possibility it could be that, but my gut tells me it's something to do with 10.5.2 update. It's really embarrassing for me to constantly glorify the Mac and have my poor switcher friend deal with something so frustrating!