crabfeathers's dashboard

I'm using Slingalink on a Mac, with Firefox and OS 10.5. I imported my gmail contacts, but most of the time, when I start to type it gives me the wrong addresses... I want to write to my friend Dan and type 'D'; it gives me the first 4 'D' addresses, but none of them are Dan. What gives? Not a very useful tool if I have to memorize all my friends' email addresses... ??