I have restored my iPad to factory 3 times to overcome this issue. Every now and then at random, the iPad will report a warning that memory is low. When I check, it has 7-8gb free.
Most recently, this cause literally everything to crash till the iPad was unusable. Even opening settings would cras, calendar would pause on a blank page for 1 minute, deleting an app would hang on floating icons.
Soft reset using one and power is the only thing the iPad would respond to, but on the lat attempt to recover, it would just return to doing the same thing immediately after the reset.
On the last restore I have found that turning off iTunes match on the PC and not syncing any music at all has yielded the best results.
I suspect there is a fundamental OS issue with syncing and disk space management on the iPad. If there are multiple sync activities required, it is most likely to crash. Eg, like external iCal calendars, multiple app updates, iCloud music match.
iTunes match and sync over wifi seem to conflict. Once enabled, iwifi sync is hard to get rid of. I found that even when you disable It on itunes, the ipad continues to try and sync if itunes is left open on the pc user account it was last connected to. I notice iTunes match or wifi sync was producing duplicate songs in the library.
Also if an email account is set to sync ALL messages, all calendar dates etc, that adds to the problem.
I paid for iTunes match so I'm surprised I can't seem to use it without crashing the iPad?
Anyone share this experience and got a solution?
Ok it's almost a month now and after making iTunes sync forget this device, I've not had a single crash due to massive amounts of sapce taken up by 'other'. The most recent ios5.1.1 update may well have fixed this issue along with turning off wifi sync with iTunes.
I have activated iTunes match ok
Only thing that crashes rarely is Safari.
So this iPad is now officially back in service!! I won't be needing an Android solution after all.