Version 0.36.0.11, when used to compile PDFBox-0.7.3 ( http://sourceforge.net/project/showfiles.php?group_id=78314 ), is much slower than IKVM v0.30.0.0 + IKVM.GNU.Classpath (which comes with PDFBox). Not sure if this is the switch from GNU to OpenJDK or what.
The issue seems to be initialization time - v30 takes 4-5 seconds, while v36 takes 10-14 seconds. After the first call everything seems fast. Thanks!