word stops responding temporarily

p4 gateway win xp system using office 2003 small biz edition. problem: word will stop responding temporarily. won’t do it all the time, but it does happen 5 or 6 times a day.

examples: if I’m typing, it’ll stop for a minute or so, then catch up to where I am. if I’m closing or saving a doc-network or local-it will hang for a minute or so, then complete.

any ideas?