My 900 connects to my WPA network with no problems.
Not that it's directly relevant, but have you applied the BIOS update?
OT: does anyone have any info on how to send off the battery to get the 
upgraded one [0]? Actually finding specific information is difficult!
Pierre
[0] 
http://www.reghardware.co.uk/2008/06/02/asus_eee_pc_battery_swap/
alan c wrote:
> I have just received an eeepc 900 - really good news :-)
> 
> However, I now discover that it has what looks like a generic problem 
> connecting to encrypted wifi networks! Open networks apparently are ok. 
> I have had no success this morning with a WEP network at the cafe in 
> town, and they even rebooted their system for me, just in case it was 
> that. Someone else was online with no problem.
> 
> There are quite a lot of postings about non connection, with a few 
> apparent things to try. They have not yet worked for me though.
> 
> I have very little experience with wireless anyway, so I am having to 
> catch up on lack of know how, and for various reasons I will not be able 
> to follow it up far a week or so now anyway.
> 
> I am peeved to say the least that a product such as the eeePC with Asus 
> custom  Xandros should give any trouble at all!
-- 
Pierre Cazenave
PhD Student
National Oceanography Centre, Southampton,
University of Southampton,
European Way,
Southampton
SO14 3ZH
pwc101@???
+44 (0)23 80596130