The harshest, most biting criticism of the global monetary "relief" system has come from inside and the top: economist Joseph Stiglitz, who ran the World Bank until November, 2000. The system's broken. The reforms don't work.
Salon [link|http://www.salon.com/news/feature/2000/05/02/stiglitz/|covers this well], Google [link|http://www.google.com/search?q=IMF+stiglitz&btnG=Google+Search&hl=en|tells much more].
For Stiglitz's own words, see [link|http://www.jubilee2000uk.org/analysis/articles/IMF_Four_steps_Damnation.htm|Four Steps to Damnation], also [link|http://www.theatlantic.com/issues/2001/10/stiglitz.htm|The Atlantic], or [link|http://www.globalpolicy.org/socecon/bwi-wto/wbank/stigindx.htm|a paper archive].