Indexing in InDesign CS3 - Windows

When I highlight a word or place the cursor in the text to add index tags, sometimes the text will compress thus changing the flow and pagination of the whole document. This happens when adding tags to some locations whether I highlight the word or just place the cursor in the space before the word. It doesn't happen with all index entries; some (maybe half) are entered without apparent changes to the text. Any ideas?? Maybe if I froze the pagination at the start??
Indexing in InDesign CS3 - Windows
I think it happens because tags somehow change the words enough for the hyphenation/spacing algorithm to let it re-run the text. Does it happen with words on the 'edge' of a paragraph, or anywhere in paragraphs?%26lt;br /%26gt;%26lt;br /%26gt;CS3 has had significant problems with indexing in the original version (5.0.0). The latest update to 5.0.4 should %26lt;br /%26gt;i finally%26lt;br /%26gt;fix everything (just in time as well). Can you check your sub-version number?%26lt;br /%26gt;%26lt;br /%26gt;%26gt;Maybe if I froze the pagination at the start??%26lt;br /%26gt;%26lt;br /%26gt;%26lt;g%26gt; you must be a migrant from another platform. Isn't that a FrameMaker or 3B2 term? It's not possible in InDesign (other than some%26lt;br /%26gt;i really%26lt;br /%26gt;horrendous tricks using No Break--but you could try that on just the troublesome words, now I think of it. It's in the Character panel menu, and you might as well put it under a hotkey.).