In the case of this bank... It was extra cautiousness...
This was in 3Q 2008 when the Global Financial Crisis was in full swing... Also the post-election effects were being felt... but by the time the 4Q came around (audits 1Q 2009) things seemed to have improved for them...
Of course, if they had known what was in store in 2Q & 3Q 2010... they might have kept the provisions!
Also... the KRA has an interest coz specific provisions can be used to reduce taxes (tax payable) by reducing profits...
Greedy when others are fearful. Very fearful when others are greedy - to paraphrase Warren Buffett