We've expericced the same problem on at least one teamwork file as well. Even after saving as a pln and re-sharing, the same problems occurred. File size did not appear to be the problem, since the problem file was about 1/3 the sizze of a larger job I've been working on for months now without problem <knock, knock on wood...>
My own suspicion is a corrupt library part, but we didn't have time to mess with it... If GS has any ideas what the problem is from reading this forum, any info would be appreciated.
The team split the file into 3 files - one for the plans, one for the elevations, and one for the details (none of the elevs or details needed to remain linked, as the modelling is remaining unchanged this late in the game). One week later, no problems have returned...
Wes