The following issues have been reported with this version of PDL:

- Newly refactored PDL::Graphics::TriD appears to be working on
  unix/linux systems, possibly ok on win32, and still being debugged
  on mac os x.  By default, PDL will build with the new code
  enabled.  Until the new implementation is stable, you will be
  able to turn off USE_POGL to get the original, legacy implementation.


- FFTW 3.2.2 is the current release version of the FFTW library
  but is not yet supported by PDL::FFTW.  You may install version
  2.1.5 of FFTW which is supported, fall back to using the PDL's
  built-in fft routines (PDL::FFT), or submit a patch to update
  PDL::FFTW to the version 3 API. 


- Overly verbose but not particularly helpful text output from
  configure, built, test process.  This can be confusing for first
  time users.


- Lvalue subroutine errors have been reported for perl 5.6.2
  installation on a linux 2.4 kernel system.  Perl versions 5.8
  and above are *really* recommended.


- Various make problems with build:

  - Using parallel make causes the build to fail so don't use -j # options.

  - Make fails with message like
      "*** No rule to make target `pptemplate', needed by `pptemplate.pod'.  Stop."
      If you have this error, please contact the PDL developers via the perldl
      mailing list and help us track this one down.  Thanks!


- PDL::IO::Dumper has test failures on some systems that appear to result
  from an incorrectly detected/use flavor of uuencode or uudecode.  Work
  is underway to diagnose this further but if you install Convert::UU that
  should resolve the problem.  Patches welcome.


- PDL configuration failures have come about because needed temp files
  are not creatable.  This appears to be a result of platform misconfiguration
  but we need data points to understand the issue.


- 16bit image file IO fails in t/pic_16bit.t apparently due to an
  older version of NetPBM which does not support the raw 16bit formats.


- The following SourceForge bugs are outstanding at time of the 2.4.4
  point release:

  2844280  demo 3d fails if PDL_3D_FONT missing  
  2780046    make does not make docs 
  2630369    PDL::FFT::fftconvolve - bad scaling?  
  2524068    Build breaks for PDL-2.4.4/Lib/Minuit (code not ISO C)  
  2339818    need lib64 searches in Graphics::TriD  
  2153898    default PDL build output too long
  1994610    TriD build problem w pthreads
  1994584    PDL Has no signed 8-bit integer datatype
  1994442    imagrgb problems
  1582350    badflag called in PDL::Core and PDL::Complex
  1505171    failure in MatrixOps::eigens in CVS
  1476324    How to force a completely clean installation
  1435189    Installation with cpan2rpm
  1205359    PGPLOT Window does not store full state info
  1059020    Problem with FFTW version 3.0.1


For more information on these and other PDL issues, and for
submissions of patches (bug patches are always welcome!), 
see the PDL mailing lists at http://pdl.perl.org/support.html
