Some section of gaim is not portable
-Each account icons
--Main Icon (It can not browser for icons relative)
-Log (It will use windows/system foler and can not use relative path to hold logs)
When i set my account icons and then use another computer my gaim will report error that file not found and i just find config files on Gaim/app/ an xml file that hold configuration and then remove files.
I think it do not work full with relative path
By not portable, you don't mean it's stored on the local PC (it isn't), you mean the paths are updated. And, yes, this is a known issue with the current release. It's being fixed in the next release.
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