When I queried Scott Thomas (of DataViz) about this, he replied that ClarisWorks applications use a translation system called XTND to aid in opening files. MacLinkPlus translators work with XTND, but if you have many XTND translators in addition to using MacLinkPlus, you may get this sort of delay. Ideally, XTND should minimize these delays by automatically rebuilding the XTND Translator List file (as stored in your Preferences folder) as needed. Otherwise, deleting the file yourself will force it to rebuild. These may help reduce or eliminate the delay. If not, Scott offers a work-around that he prefers to simply turning off MacLinkPlus. The work-around disables MacLinkPlus only for applications that use XTND:
1. Quit all XTND applications (like ClarisWorks)
2. Remove the file MacLinkPlus Bridge from the Claris Translators folder
3. Trash the file XTND Translator List in the Preferences folder
4. Start the XTND application (you'll notice a pause as it rebuilds the XTND Translator List minus MLP)
If you also use Macintosh Easy Open, there may be additional things to consider. Check this DataViz web page for details.