is linux more picky than windows over connecting to APs?

Hi
I've had a couple of instances where running in linux I have been able
to see an AP exists through iwlist and kismet but not been able to
connect. When I've rebooted into windows I've connected ok. When this
has happened it has always been on APs with low signal strength. As
far as I know the APs are standard setups, one was a completely
default linksys so there is no special IPS doing anything fancy.

I thought that maybe it was just me but I've read a few posts on
forums of other people seeing this so maybe it isn't. Has anyone else
experienced this and if so is there an explanation?

Robin