Wireless Signal Bar Problems on iPod Touch 2G OS 3.0 Beta 4

I recently upgraded my iPod from firmware 2.2.1 to beta 4 of the 3.0 beta firmware. Soon after installing the new beta firmware I noticed that my wireless signal was low 1/3 power. The power flucuates between 1/3 and 2/3 power with the ocassional 3/3 power. Internet speed does not seem to be an issue, most of the time and it seems that I'm not picking up wireless routers/signals as good as before. The problem isn't with my wireless router and wireless power in my iPod isn't full even when I stand next to it! I wanted to know if this is a bug in the beta or just my iPod?