I would highly recommend
"SYSTEM Manager for iPad"
Great for checking out what is going on in your iPad.
The processes page shows you what Apps are running,
and what processes are running and how much memory they are using.
Googling the processes, especially high resource using ones, can help to figure out what might be going badly.
Example: I searched dataaccessd and iPad, and found several posts where people found solutions, like tweaking calendar settings, or found a corrupt email was causing their problems.
This App has fluctuated a lot between $1.99, and .99 .
so far the most complete system help I have found.
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