iPhone 5 / diagnostics and usage log full of entries / is my phone ok!?

Good morning!

I've a question regarding the "diagnostics and usage" log entries on my new iPhone 5.

Once an Apple employee told me that the folder should be as empty as possible. That is a good sign and means that your phone is ok.

Now I checked my diagnostics and usage folder and found the following:

awdd_2012-10-... entries (9)

log-aggregated-2012-... entries (7)

MobileSMS_2012 (1)

Siri-2012-... entries (8)

stacks-2012... entries (>10)

Can anybody help me with these entries and logs? What do they mean? Do I have a hardware or software problem or is it ok?

I'm looking forward to your help!

Best regards

Jan