Unstable wifi connection

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I am having a very annoying problem but I don't know if it is application or system related. When I try to copy a file from my network drive to SD card with ES File Explorer the whole thing copyes normaly or (most of the time) I get an error. After that the wifi connection doesn't work anywhere (browser, market...) and I can make it work again by disabling and re-eanabling it. After that I can browse the internet.... but I still can't copy a file from a network HD. The whole thing just repeats itself. Or downloads a % or two and stops with an error.

Originally Posted by r000li

I am having a very annoying problem but I don't know if it is application or system related. When I try to copy a file from my network drive to SD card with ES File Explorer the whole thing copyes normaly or (most of the time) I get an error. After that the wifi connection doesn't work anywhere (browser, market...) and I can make it work again by disabling and re-eanabling it. After that I can browse the internet.... but I still can't copy a file from a network HD. The whole thing just repeats itself. Or downloads a % or two and stops with an error.

Root your phone and grab the app "WifiPowerSavingOff" from market.

Judging by the name of it - won't it eat my battery faster? Because I like to have my wifi enabled all the time.