[OS X TeX] Long document typesetting problems

[Pete Chvany]

A user in a department I support has reported a couple of problems  
when typesetting long documents. He's using TeXShop 2.26 via the  
MacTeX-2008 distribution dated 20 March 2009, on Macs running either  
OS 10.5.7 or 10.5.8.

The symptoms he reports are as follows:

1. When typesetting a long document after fixing brace mismatches  
(i.e. problems with misplaced { or } delimiters), he has to delete  
his .aux files wholesale and start fresh. He reports that he did not  
have this problem in the past.

2. When he makes small changes and typesets a document again, the  
document view seems to recall his place in the document incorrectly,  
though it gets close enough to suggest that it's trying. If he was on  
page X before re-typesetting, the viewer will return him to page X +/-  
2 or +/- 3, but never X. This is also apparently recent behavior.

I hope these are appropriate questions for the forum; my role is  
desktop software and hardware support and my knowledge of TeX goes  
just deep enough to be shallow, but I'm hoping someone can suggest  
workarounds, or note that this kind of behavior is to be expected, or  
that there is a bug fix in work, or something of the sort. Thanks in  
advance.

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Pete Chvany