I've had this error when I goto top 25 or categories in the app store for about 2 months. I've tried resetting network settings, signing in and out of the app store, restarting both ways, using 3G or 4G and nothing works. Today I tried resetting all settings and this did work, but about 30 minutes later the problem occurred again. Then I reset again and changed all of the settings one by one, and opened up apps one by one. I couldn't figure out what caused the error, but a couple hours later, it happens again. One thing I noticed is that when i have the error, the 5 buttons on the bottom of the screen are different than standard. I have featured, search, updates, categories, and top 25. But when I restart all settings, those buttons are in a different order (I think updates is last). Does anyone know what's going on and how to fix this problem? I'm running iOS 6.1.3 on an iphone 4. Thanks.