[Q] Xperia X10 mobile data issue - XPERIA X10 Q&A, Help & Troubleshooting

There is something wrong with my internet access. I think it happened after I tried a program called Proxyserver (not sure about it if it is the correct app name). When I turn on data traffic I can't use the browser to surf on the net, but I can go on the market and browse apps but can't install them. When I try to download apps from market, it says that the download is temporarily stopped or something. Also another weird thing is that I can check my mail.
Possibly the app messed up the phones proxy settings, the app said that it brings up the proxy settings or something. After the internet access stopped working I tried uninstalling the app but it didn't work. I tried to delete all cookies and the other stuff. So anyone have an idea how I could fix it?
Another thing that might be the cause that I have tried to root my phone using superoneclick or Z4Root. Since I was unaware of rooting the phone back then I also had Z4Root. I'm not sure which one I used first but I mixed the 2 programs and the phone became unstable until I reflashed it.

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-PiLoT- said:
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Try repairing it with PC Companion, or remove any apps you installed prior to it happening.