Created attachment 723976 [details]
partial kmozillahelper strace output

Every time I click on an unread HTML email with web links in Thunderbird, it
spawns a new instance of kmozillahelper and kmozillahelper spends up to a
minute enumerating plugins in /usr/lib64/qt5/plugins/kf5/ and services in
/usr/share/kservices5/ fully utilizing one CPU core.

This happens for each new unread HTML email.

See attached strace output for sample activity log. Also, it seems that some
plugins (like smb.so are processed more than once). JUst grep the attached
strace output for smb.so (or any other .so name).

IMHO, TB should not spawn a new kmozillahelper process for each email, and
should avoid rescanning plugins/services each time ...