Look on the following web site. I believe this is bacterial spot. Symptoms: Bacterial speck is widely distributed. Symptoms may appear on any plant part. Leaves of infected plants are covered by small, dark brown, irregular patches of necrotic tissue that are surrounded by yellow halos. Disease severity is increased by leaf wetness from sprinkler irrigation, rain, or heavy dews. Control: Minimize wetting of the leaves by using drip or furrow irrigation. Copper sprays provide effective control. Joe Here is a link that might be useful: Texas Tomato disease site

WOW! No kidding! Thanks for the info. I guess it just seems so unlikely that one would be flying at the altitude of my apartment and squeeze through a screen to find my tomatoes. But if that's the only way, then that's the only way. Thanks so much for posting!

Looks like early manganese deficiency to me. Smatter scattering of tiny yellow freckles on all the leaves including new growth. Progresses to interveinal chlorosis and larger spots which turn necrotic. The soil/compost mix you used in that container - which is never recommended for a container - is very likely low in many of the minerals but high in calcium carbonate - most all rockery soils are - and that CaCo3 interferes with manganese uptake by the plant. If there are no signs of any pests then I suggest some internet research into that deficiency. There are many different tomato nutrient deficiency websites with photos that you can compare your plant to. The simple solution is to transplant it into the ground which is rarely manganese deficient (not sure what the purpose of that container is anyway). Or if you are going to confine it in a container then use a proper soil-less container mix, one that also contains added soil bacteria so that your compost can be of any benefit to the plant. Compost provides no nutrients without an active soil food web to digest it to a form usable by plants. Dave

I'm no expert, but if they were my plants I'd blame the rain, but keep an eye on them. Now, I'm assuming you've had quite a bit of rain. Or perhaps only a few inches, but the tomatoes are in a low-lying area, or your soil doesn't drain as well as you'd like. Anyway, have a look at the thread linked below. Here is a link that might be useful: http://forums.gardenweb.com/forums/load/tomato/msg0621241916357.html