Nearly had one on my first area solo. Just took off from caboolture in a skyfox gazelle heading east toward bribie island bridge, i gave a departure call and leveled off at 1500ft, heard another aircraft call "bribie bridge 1500 tracking south for beachmere" but as i was still 6 or so nautical miles from the bridge i didnt believe this to be an issue so i continued tracking for bribie, a few miles later as i was approaching ningi township i saw a small flicker of light out of the left corner of my eye i turned my head to see a cessna coming directly at me at the exact same altitude, without even thinking i jammed the stick forward and dove down as i did i looked up through the skylight of the gazelle to see the cessna pass directly over the top of me, i looked back to the right and the cessna never climbed or altered course in any way.
Which then brings me to last weekend when i was doing some training in the foxbat, we just finished doing some steep turns over central bribie at 2500ft and were heading west toward donnybrook to do some forced landing practice, the airspace over bribie was really busy that day radio calls galore, constant scanning and spotting aircraft passing beneath up and down the coast, but while scanning i looked back over my left shoulder to see a cessna passing behind us at exact same altitude wouldnt have been more than 100 meters which is still a little close for comfort if you ask me. I guess thats why its a danger area.