I have a 7 month old Daughter, and she whinges from the minute she gets up, until the minute she goes to bed.
She has really happy spells too when you are playing by with her etc, but on the whole she just cries and whines over everything.
I can only put her down for 5 minutes at a time (if I'm lucky). She is happy and quiet if I am holding her, but that's about it!
It's hard because I also have a 3 year old. My 3 year old was a brilliant baby who literally never cried.
Are babies just like this sometimes??!