Massive RAW files on editing originals in Iphoto

On some occasions, but not all, when I process a RAW file and go to upload the result to Flickr, I discover it is some 4 or 5 times the size of the original RAW file, but on other occasions it isn't.  This seems to repeat in certain files, if I try to redo them.  Is this siomething I can work round, or isit something I am stuck with?  Thanx in advance if anyone can help!
D

editing can not "change" the size of a RAW file since the original RAW file is kept and you can not edit RAW - when you edit RAW you create a new file iin either a JPEG or TIFF depending on how you have changed the default iPhoto preference settings - exactly how are you editing the RAW? In the iPhoto preferences do you have the preference to save RAW edits as TIFFs checked (betting you do) - if so uncheck it
LN

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