Actually I was totally wrong before. The Size field gives the size of the actual .deb file (in bytes). The Installed-Size field gives the amount of disk space required to install the package (in kbytes). See the dpkg Programmer's Manual 4.2.11 and 4.2.20 for more details.
Because the Installed-Size field was introduced with the new source packaging scheme, only packages released in the last 3-4 months have it. Only a few of the packages in stable are newer than that. Guy -- TO UNSUBSCRIBE FROM THIS MAILING LIST: e-mail the word "unsubscribe" to [EMAIL PROTECTED] . Trouble? e-mail to [EMAIL PROTECTED]
