I purchased iPad Air on release date, 64G wifi only. Set up as new, did not do a restore. I mostly use Safari for searching the internet. Also use it for reading and checking email. I have 83 apps(including those that Apple preinstalled), 3 songs and 12 photos. I did not go into each app to see if upgraded to iOS7 since my trouble is mostly with Safari. Currently, there is 40.0G available. I have done everything suggested at all the discussion forums: reset all, erase all, erase history, clear cookies and data then turn off/on, turned off iCloud, app refresh, notifications, spotlight search and anything else suggested. Upgraded to 7.0.4 yesterday....same trouble. When I look at the diagnostics probably 90% of the incidents are showing "LowMemory". Anything more you can suggest would be greatly appreciated. My window to return the iPad is closing.