WiFi connecting problem

[13beli13]

Have a samsung galaxy II 9100. Had no problem connecting to wifi while it?was running 2.3.4 or 2.3.6 official firmware, untill 2 days ago when I made an upgrade to official 4.0.3 ics. Now it connects to all other wifi networks except my home wireless. I made a clean flash, wipped data,cashe, dalvik cashe etc.I?m using linksys WRT300N wirelles-N router,and all other devices are able to connect it, my laptop,other android phones. Also before I installed an ICS 4 I tried MIUI 2.3.16 running 4.0.0.3 Android. Had the same problem. Can anybody help me? Thanks

 

[SeattleBrad]

Are you running AT&T Smart Wifi in the background? It runs by default and I fixed this problem by adding my home network to my preferred networks.

 

[13beli13]

No. I?ll give a try... Thanks