help with huge memory consumption??

I'm running a utility on kernel 2.6. When I run "ps aux", it shows my
utility as using 109MB of memory!!

root 5817 5.3 0.2 109132 1172 ? Ssl 18:01 1:23
/usr/src/ip3/shad

Yet "size -A" shows:
size -A shad
shad :
section size addr
..interp 19 134512980
..note.ABI-tag 32 134513000
..note.SuSE 24 134513032
..hash 576 134513056
..dynsym 1200 134513632
..dynstr 738 134514832
..gnu.version 150 134515570
..gnu.version_r 240 134515720
..rel.dyn 24 134515960
..rel.plt 552 134515984
..init 23 134516536
..plt 1120 134516560
..text 62932 134517680
..fini 26 134580612
..rodata 8986 134580640
..eh_frame_hdr 508 134589628
..eh_frame 2636 134590136
..ctors 12 134596868
..dtors 8 134596880
..jcr 4 134596888
..dynamic 232 134596892
..got 4 134597124
..got.plt 288 134597128
..data 64 134597416
..bss 45952 134597504
..comment 742 0
..debug_aranges 344 0
..debug_pubnames 2210 0
..debug_info 35545 0
..debug_abbrev 5428 0
..debug_line 5319 0
..debug_frame 3516 0
..debug_str 9052 0
..debug_loc 9005 0
..debug_ranges 24 0
Total 197535

which is only about 200KB even with debug functions. I have no explicit
malloc or new calls, I open 3 pthreads and one message queue.

I'm trying to figure out where all this memory is getting eaten up!!
I tried looking at /proc/`pidof shad`/status, and it shows
VmData: 106772 kB
which clearly is where my memory is consumed, but I don't know how to
break this down any further.

I've tried running objdump against the utility, but it just documents
essentially the same thing that 'size' does.

Is there anything else I can do to somehow enumerate this memory usage??

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