_dyld_start causing leaks in iphone apps

Question

Using the Allocations Instrument on my Iphone Device, I notice in my heapshots that all my heap growth is caused by the _dyld_start caller (of dyld library).

Here is an example:

Snapshot: UIImageView
Heap Growth: 4.83 Kb
Still Alive: 103

When I look in the details, all I see is several instances of the following:

Object Add: xxxx
Creation Time: ....
Live: check
Responsible Library: dyld
Responsible Caller: _dyld_start

1. What does this mean?
2. How can I change my code to release this memory?