Problem with wifi

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http://forum.xda-developers.com – Hey guys, I`m facing a problem of my HD2 with wifi. I`m using ultimate droid 3.3 rom, and when I connect to router, after some time it disconnects, and after few seconds it reconnects again. It does not matter if you are close to wifi source or far, the wifi logo in top of the screen disappear, after few seconds it appear and connects again. Any suggestions? Thanks (HowTos)