Beware the Sulfites. Sensitivity to sulfites is common among asthmatics. For me, an allergic reaction can result in a severe asthma attack. Dried fruits are usually responsible for the reactions. As with all processed or manufactured food items, I consistently check labels.
In some rare cases, dropped frames can be caused by an old network adapter driver doing a poor job of handing the high speeds being consumed. It's not a bad idea to just check to see if there are any new drivers for your network adapter, just to be sure.
Too much nitrogen can cause blossoms to drop; feed your plants with aged compost, not nitrogen-rich fertilizers. Water stress can cause blossom drop; keep the soil evenly moist; do not allow the soil to dry out. Watering in fits-and-starts will stress tomato plants and blossoms will be the first casualty.