Version 4.5.5 of thredds (beta) and netcdf-java (stable) is now released
and available from our website:
http://www.unidata.ucar.edu/software/thredds/v4.5/netcdf-java/documentation.htm
http://www.unidata.ucar.edu/software/thredds/v4.5/tds/TDS.html
The 4.5.5 release fixes several bugs, including:
   1. a memory leak when processing netcdf4/hdf5 files
   2. a bug with nested aggregations not working when caching was on, eg in
   TDS
   3. a bug handling client-side certificates
   4. handling of scalar runtime coordinate for GRIB collections
   5. upgrade ncWMS
   6. fix NIDS start/end dates
Please upgrade asap, especially due to the first bug listed.
thanks!