Please send some sample pdf files that don't keyword properly to
support@kinook.com for our evaluation.
Ultra Recall is using standard windows APIs to do the conversion to lowercase, which are documented as using the windows locale for control this conversion.
Are the 'accented' words that don't search properly in the same code page as your Windows code page? Our testing (in the 1252 code page) shows the keywords containing the uppercase version of the accented character - but I would expect this since that accented character isn't in codepage 1252.
Searching for the uppercase of the word should work as a less than ideal workaround...