Known Common Lisp Implementation Issues when using GBBopen

Clozure CL 1.8 (all platforms)
 - HASH-TABLE-COUNT on lock-free hash tables is very costly relative to
   GETHASH and as compared with HASH-TABLE-COUNT on other CL implementations.
   This slows journal loading (among other things) by an order of magnitude.
   The current full-table-walk strategy needs to be replaced with a carefully
   changed counter that can be accessed quickly (Clozure CL ticket #881).

CMUCL 20b-c (all platforms)
 - CMUCL's native WITH-TIMEOUT (used in :portable-threads) doesn't nest
   correctly; however we still expose the native version (in the hope that it
   will be fixed someday) rather than rolling our own.  Nested WITH-TIMEOUT
   users beware!!!!

SBCL 1.0.44-55 (all platforms)
 - :agenda-shell-test fails to trigger all KSAs when started by load/autorun; 
   works correctly when invoked after file loading

==============================================================================
File updated: March 30, 2012