Memory not freed after ending of application

Accelerated Computing CUDA CUDA Programming and Performance
1

For example
First run:
Device name: GeForce 8500 GT
Device version : 1.1
Total global memory: 255 MB
Shared memory per block: 16 kB
Registers per block: 8192
Warp size: 32
Max threads per block: 512
Shaders clock rate: 918 MHz
Free GPU Mem:210

Second run:
Device name: GeForce 8500 GT
Device version : 1.1
Total global memory: 255 MB
Shared memory per block: 16 kB
Registers per block: 8192
Warp size: 32
Max threads per block: 512
Shaders clock rate: 918 MHz
Free GPU Mem:103

OS is Windows Server 2003 R2 SP2, x64 edition.
x86 edition of CUDA 1.1 was used (32-bit application).