Huh?! I certainly don't have those dll's either, even ran a search on c: now, and yet the bookmarks etc. work perfectly normal, and neither does the bookmarks.dll need those files, acc. to my own dep-walker.
Perhaps it depends from the system somehow?? Have no clue of such stuff, am curious what others will tell. Which of your plugins (and which version of it, date) needs those files?
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Bugs