EDIT: I checked the console logs, and nothing shows up related to this. I have a few messages from when I re-installed Adium, but that's it.
Note that this is from my re-install; this problem started about 8:45a. No new messages appear in the console when I start Adium now, or close it, or try and connect, or anything.1/7/11 9:10:18 AM kernel CoreServicesUIAg[213] Unable to clear quarantine `Adium': 93
1/7/11 9:10:18 AM kernel CoreServicesUIAg[213] Unable to clear quarantine `AdiumLibpurple': 93
1/7/11 9:10:19 AM Adium[211] Invalid animated icon state
1/7/11 9:10:19 AM Adium[211] -[AdiumSetupWizard loadWindow]: failed to load window nib file 'SetupWizard'.
1/7/11 9:10:19 AM Adium[211] -[AdiumSetupWizard loadWindow]: failed to load window nib file 'SetupWizard'.