iPhone memory leak (a lot of allocations)-Collection of common programming errors

I tested my app in Instruments. No leaks found, but app crashes (not immediately – after ~20 minutes [depends on user’s activity] of working). I viewed Allocations. It reports:

Category | Live Bytes | Count Live | # Living | # Transitory | Overall Bytes | # Allocations (Net / Overall)
Malloc 16 Bytes | 235088 | 14693 | 0 | 235088 | 14693 | 1.00

All records (when I view detailed info for “Malloc 16 Bytes”) are made for only one object:

# | Object Address | Category | Creation Time | Live | Size | Responsible Library | Responsible Caller
0 | 0x104b50 | 817461248 | . | dyld | _dyld_start

(…and 14693 records with same fields data, except, of course, #).

Stack Trace:

   0 CoreFoundation __CFAllocatorSystemAllocate
   1 CoreFoundation CFAllocatorAllocate
   2 CoreFoundation __CFGetConverter
   3 CoreFoundation CFStringEncodingGetConverter
   4 CoreFoundation CFStringGetSystemEncoding
   5 CoreFoundation __CFStringInitializeSystemEncoding
   6 CoreFoundation __CFInitialize
   7 dyld ImageLoaderMachO::doImageInit(ImageLoader::LinkContext const&)
   8 dyld ImageLoaderMachO::doInitialization(ImageLoader::LinkContext const&)
   9 dyld ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&)
  10 dyld ImageLoader::recursiveInitialization(ImageLoader::LinkContext const&, unsigned int, ImageLoader::InitializerTimingList&)
  11 dyld ImageLoader::runInitializers(ImageLoader::LinkContext const&, ImageLoader::InitializerTimingList&)
  12 dyld dyld::initializeMainExecutable()
  13 dyld dyld::_main(macho_header const*, unsigned long, int, char const**, char const**, char const**)
  14 dyld dyldbootstrap::start(macho_header const*, int, char const**, long, macho_header const*)
  15 dyld _dyld_start

I can’t paste all code here (app is not a few lines). But, please, give me some advice – where to search for memory leak or smth. else…