I've had my tent for a long time and know it very well. As Mel writes, much condensation is caused by breathing, I agree with that. In my experience condensation also seems to happens over a range of temperatures, I sometimes get a little which is no bother but sometimes the condensation is 'heavier', especially in the autumn and can blend together to form large droplets. Is not a problem for me, I'm just acknowledging that it happens sometimes. One thing I do notice however is that large slugs seem to like the damp inner tent a lot, in the morning I often find them right at the top of my mesh. It used be a bit unnerving waking up in the middle of the night to see a large slithery thing gradually making it up the side of my inner tent but I'm now used to it.
As a related matter. I used to always fill my flexible water container and leave it lying down between the innner and outer tent near to my head, before I settled down to sleep, but I became really fed up with mice running back and forth across it, I'm sure they thought it was just a fun water bed!
I've had a few drips on my face in certain weather conditions but never enough to have an effect on my sleeping bag or anything else.