I am generating a PDF using PdfGraphics2D.
While testing the generated PDF in Adobe Reader (9.1.0) I noticed that the 
Reader displays the document just fine, but freezes on the first mouse click to 
the document (I was trying to select text): Full CPU utilization, no redrawing.
Interestingly Foxit Reader can handle the document fine.

After a while I found that the reason was that I forgot to call dispose() on 
the Graphics2D object I used for drawing.
So this e-mail is a warning and hopefully a helpful google-search result for 
other iText users.

Also, to prevent this kind of mistake:
Would it be possible to issue a warning (on the console) if the document is 
closed while there are still undisposed Grpahics2D objects for its content?

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