Over at the Mac Observer, Dave Hamilton told of an iPod touch whose SpringBoard would repeatedly crash. (SpringBoard is the iOS equivalent of the Finder.) After trying a number of troubleshooting procedures, he narrowed it down to an iCloud issue, where corrupt data was causing the crash. Hamilton found info in crash logs indications of what was causing the crash. He eventually deleted a folder on the Mac that was linked to the iPod (com~apple~TextInput) and this resolved the issue.
iCloud has been, for me, a common source of dismay. I've not found it to be reliable enough to entrust any important data to it - though for some data, such as contacts and calendars, you have no choice. I've had to go through complicated procedures to reset different types of iCloud data several times to resolve syncing issues. This crashing problem is just another of the issues that iCloud can be responsible for.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20130418010221596