Which clamp did you use?Yep, happened to us. They used a section of tubing JUST a tad too short and with the smallest amount of water pressure filling it, it let loose. We just upgraded the clamp to a better one and jammed it back together and tightened it up REALLY tight. Hasn't come off since.
And while you're in there make sure those city water plastic connections are good and tight also. Ask me how I know this.