DS18B20 crosstalk?

[boozz]

Hi,

I've been searching the forum for similar problems I'm having at the moment and could only find the one as per below:

Re: Same value from 2 different placed DS18B20

My problem is that my sketch once in a while seems to mix up values of 4 attached DS18B20 sensors. It's the almost the standard sketch as provided in the examples (I didn't change too much. Why improve something which that's already good...)
Is this a known issue. Anyone experiencing the same issues?
I'm using the 1.4 api.

Thanks,

boozz