Horus 22 was flown on Wednesday March 14th 2012 principally to allow Network 10 TV to make a segment for one of their kids science programs all about Project Horus.
For this flight, only the telemetry payload was flown. It was a good thing too, as the balloon went into float mode at ~ 34km altitude, drastically slowing it's ascent from approximately 4-5m/s to around 1m/s. It then began drifting west and slowly continued to climb to a shade over 37km (37055m) before finally bursting around 30km west of it's original predicted position. This placed the landing in a precarious location near the Coorong in South Australia. (The Coorong is a coastal lake system formed by the River Murray as it reaches the Southern Ocean).
Unfortunately the winds at low altitude weren't favourable, and in the end, the balloon landed ~2km off shore in the Southern Ocean.