I have an iPhone 3GS with 8GB and iOS 5.1.1 * Practical available memory is usually 6+GB * Yesterday, when I last backed up, my memory was about half full, a combination of music (0.9GB), photos (0.16GB) and apps (1.4GB). * Just now, not even 24 hrs later, I see my memory usage has jumped up to nearly 5GB, leaving only 1.57GB free. When I look in iTunes, the yellow "other" bar now accounts for 2.2GB but I know I did not add anything there. * The only new thing is that system settings notifies me it wants to install iOS6. I do not want to upgrade. Could it be that the phone downloaded the upgrade, even though I did not tell it to? * If it is not the new OS waiting to be installed, what could it possibly be? And how do I get rid of all that bloat? * Please advise, thanks in advance!