We've lived in the same house for 10 years and last summer, for the first time, we were invaded by these little buggers.
Over the warmest part of the summer, I'd be finding 4 or 5 a day throughout the house. I hoped it was a one-off as we've never seen them before but I've found one yesterday then again today!
Hopefully you can see the pics, they're zoomed in but the beetles are approx 1x0.75cms in size, so quite small, quite slow but bloody annoying.
Any ideas?