[ubuntu] Can't remove gcc after upgrading to 12.0.4 (LTS)

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http://ubuntuforums.org – I had 10.04 LTS installed on my machine without gcc. I upgraded to 12.04 LTS (do-release-upgrade) just now and I see gcc-4.6 is installed. If I try to remove it in Synaptic, it tells me it'll also remove accountsservice, acl, acpid, adduser and about 100 other packages essential to the system and unrelated to gcc. What gives? Thanks for any insight. (Hardware)