SInce I first reported that "Only resources can modify remote identifiers" error has not recurred.
However, Find Messages is in other respects so broken as to be unusable.
First, it does not work as expected on 'To' or 'From' fields. For example, if one has been sending emails to
'fredsmith@some.where', it will not find any of them in Sent-mail if a substring is used as the search argument (e.g. "fredsm" or "dsmith" or "some" or "where.
However, it will find SOME of them if "fredsmith" or "some.where" was the search argument.
In other words, it is only searching on 'left-hand-side-of-@" or "right-hand-side-of-@" equal to search argument.
Even then, it fails to find ALL of the occurrences.
For example, a Find in 'Sent-mail' for "gmail.com" finds only 11 emails:
5 'this week'
4 in 2004
1 in 2005
1 last week
whereas the same search on the same Sent-mail directory using KDE 4.5.2's KMail found 395 matches!
So Find Messages is truly 'work in progress', and cannot be relied upon to return correct results - if any.
Because of that I am unable to use KMail 4.8.2 on a regular basis, so I am - regretfully - postponing my intended move over to Mageia until a version of KMail with a working Find Messages is available.
As KMail 4.8.3 does not solve the problem either, it may be not until KMail 4.9 comes along in August before I shall be able to return to Mageia - something I was looking forward to, as I think it's a great distro!
N.B. There are in fact 2 bug reports on subject:
https://bugs.kde.org/show_bug.cgi?id=281227 https://bugs.kde.org/show_bug.cgi?id=299840but there seems to be no action taking place in there (apart from the comments I have added.)
I shall miss Mageia, and hope Autumn will see the solution to this problem.