Solution : https://service.sap.com/sap/support/notes/1013521 (SAP Service marketplace login required)
Key words : 
\usr\sap\<instance>\jc<instance_nr>\j2ee\cluster\server< srv_nr>\apps\sap, \irj\servlet_jsp\irj\root\web-inf\portal\portalapps\, sap enterprise portal sp2 solution user personalization, /saphelp_nwce711/helpdata/en/df/9f20b403f541efa0450dd38107d319/frameset, /saphelp_nwce711/helpdata/en/b2/77284a96264e9183161b7e8718dfa8/frameset, /saphelp_nw04/helpdata/en/49/e607426338da6fe10000000a1550b0/frameset, /saphelp_nw04s/helpdata/en/45/fff338e19134dde10000000a1553f7/frameset, /saphelp_nw70ehp1/helpdata/de/45/fff338e19134dde10000000a1553f7/frameset, source/target locales lists separated, user personalization dialog follow
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| 778884 | Central Note for the Portal Content Translation | 
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