The following table summarizes results of running a buffer against the dataset in 
source:trunk/tests/xmltester/tests/safe/buffer-1.01.xml

|| '''dist''' || GEOS 3.3.0 + patch   || GEOS (b) OLD reduc stratg       || GEOS (b) NEW reduc stratg       || JTS (c)                         ||
|| 0.35       || Same output as 3.2.0 || ok on 1st attempt, no reduction || ok on 1st attempt, no reduction || ok on 1st attempt, no reduction ||
|| 0.75       || Same output as 3.2.0 || ok on 1st reduction (1e10)      || ok on 1st reduction (1e5)       || ok on 1st reduction (1e5)       ||
|| 1.01       || Same output as 3.2.0 || ok on 2nd reduction (1e9)       || fail on 5th reduction (1e1)     || ok on 1st reduction (1e5)       ||
|| 1.1 (a)    || Same output as 3.2.0 || ok on 2nd reduction (1e9)       || ok on 1st reduction (1e5)       || ok on 1st reduction (1e5)       ||
|| 1.5        || Half incorrect   (i) || ok on 2nd reduction (1e9)       || fail on 6th reduction (1e0)     || fail on 1st reduction (1e5)     ||
|| 2          || Incorrect output(ii) || fail on 10th reduction (1e1)    || fail on 6th reduction (1e0)     || fail on 1st reduction (1e5)     ||
|| 5          || Incorrect output(ii) || fail on 10th reduction (1e1)    || fail on 6th reduction (1e0)     || fail on 1st reduction (1e5)     ||
|| 10         || Incorrect output(ii) || fail on 10th reduction (1e1)    || fail on 7th reduction (1e-1)    || ok on 1st reduction (1e5)       ||

(a) aka TestBufferJagged.xml [[BR]]
(b) GEOS 3.3.2SVN r3523 / 3.4.0SVN r3524 on a 64bit system [[BR]]
(c) JTS rev.480 [[BR]]

(i) Same as GEOS 3.2.0 in xmltester. Incorrect in GEOS 3.3.0 client -- same problem as (ii). [[BR]]
(ii) Output seems to have lost way too much precision. [[BR]]

= Resources =

diffnoding.gz contains the offsetcurve produced by both GEOS and JTS with reduction scale 1e5 and distance 1.01 against input. [[BR]]
The curve, passed to [source:trunk/src/operation/buffer/BufferBuilder.cpp#L507 BufferBuilder::computeNodedEdges], results in edges with a differently computed _depth_ between JTS and GEOS.