POI freezing?

[Jeffrey Zhao]

I'm using POI to get text contents and having intermittent freezing. The java 
thread calling  this part hangs sometimes.
Have you experience similar problems?  I'm using following code.

            PDFParser parser;
            String parsedText = null;
            PDFTextStripper pdfStripper = null;
            PDDocument pdDoc = null;
            COSDocument cosDoc = null;
            try {
                  parser = new PDFParser(in);
                  parser.parse();
                  cosDoc = parser.getDocument();
                  pdfStripper = new PDFTextStripper();
                  pdDoc = new PDDocument(cosDoc);
                  if(!pdDoc.isEncrypted()){
                        pdfStripper.setStartPage(1);
                        pdfStripper.setEndPage(Integer.MAX_VALUE);
                        parsedText = pdfStripper.getText(pdDoc);
                  }else{
                        log.error("PDF Failed (" + fname+ ") Encrypted");
                  }
            } catch (Exception e) {
                  log.error("PDF Failed (" + fname + ") Error: " + 
e.getMessage());
            } finally {
                  try {
                        if (cosDoc != null){
                              cosDoc.close();
                        }
                        if (pdDoc != null){
                              pdDoc.close();
                        }
                  } catch (Exception e) {
                        log.error("PDF Close (" + fname + ") Error: " + 
e.getMessage());
                  }
            }