Dyson & iPhone Incompatability

I am the proud owner of an iPhone. I also own a Dyson vaccum cleaner (hey - I'm a proud owner of that too). I've recently come across an amusing incompatability with these two items.

Whilst merrily vacuuming away over the last couple of months I had found that all of a sudden my Dyson would stop working - it would simply turn off. I have now discovered that this is due to the weighty nature of the iPhone and the specific height of the dyson power switch. Oh, and of course the fact that I keep the phone in my left pocket and I'm quite short. Basically every now and again the weight of the phone is enough to push the power switch down.

Has anybody else experienced similar or is this as I suspect just me?