The wavelet denoise plugin is a tool to reduce noise in each channel of an image separately. The default colour space to do denoising is YCbCr which has the advantage that chroma noise can be reduced without affecting image details. Denoising in CIELAB (L*a*b*) or RGB is available as an option. The user interface allows colour mode and preview channel selection. The denoising threshold can be set for each colour channel independently.
i update all library to the newest version available.
But please note that Python itself may only partially updated (now is included 2.5.2 before was 2.5.0) since most of other py libraries included require python 2.5 and will not accept python 2.6.
And also about Python windows binary come in several version so if you have a peculiar architecture(i.e a X86 processor ) may be better for you download it directly here http://www.python.org/download/releases/2.5.2/