It seems to happen a bit less, but still happens.
When it does happen, Word seems to eat up about 10-15% of my CPU when idle in the background (powerbook 1.25 Ghz). Also, tonight, Word started to slow down for no apparent reason (this also happened in version X)--ie, slow scrolling through a document, general sluggishness, etc. Closing the document and reopening it seemed to take care of the problem, but I was bummed to see this issue is still with us.