Go into your user CP[Control Panel],then click options have you
got the box,s ticked under Thread Display Options ,if you havnt
try it and see if smilies appear.
Untick options, save and logout.
Clear cache and cookies out.
Login, retick options, save and logout.
Clear cache and cookies out.
Login and hope it works.
I had a similar problem on another forum once, did all that and it worked, but then again that was IE.