All the advice given is great!
This thread so cracked me up, sorry...one of my kittens will start meowing like crazy if there's not another cat or human near him-and there's 7 cats here! He'll start 'screaming' when he's alone and wants someone, so I have to call him, and he'll run and jump to me for affection. Sometimes he'll be in the office w/me, and can't see me cuz I'm on the other side of the desk and start screaming away. Hims just the cutest little thing I've ever seen. (and i've known him literally since the day he was born...he's just like that i guess)
Anyway... I like the advice given, definitly try what others suggested. My bro recently took in a stray cat he found, and she has seperation problems. She's still adjusting to a loving home though. I suppose especially when you don't know a cat's past, it takes them awhile to adjust to knowing that they won't be abandoned and are in a safe loving home for the rest of their life. GL!!!