engine oil pressure light coming on, and then off

[mike.sg]

so after some riding about, I've noticed the red light coming on again, this time within 100mi or so.

I'm beginning to suspect I have a leaky seal somewhere, cos this kind of oil consumption should result in my bike smoking like a 2 stroker, I think. But the exhaust looks clean.

So, Im going to start cleaning the bits, and start looking for leaks. Wish me luck!