I would definitely give it more time; it can take a couple of weeks or even longer before you hit a digestive homeostasis. The first few days of paleo can be at best mildly irritating, and at worst, quite uncharitable. Vegetables are a great part of paleo, but don't overdo those (or fruits); if your symptoms persist, giving increasing protein and fat a try while losing some of the vegetables and fruit.

Anytime you make a major change in diet your digestive system and gut flora will have to adapt to it. The more drastic the change, the more likely you are to have gastrointestinal symptoms.

It sounds like you are coming from a nominally healthy starting position, and if that's the case I wouldn't sweat a few weeks or a month of digestive turbulence as your body adapts to more fat than you're used to, and the new dietary regimen in general. I'd also do a sanity check on the kind of vegetables you're eating; too much fiber, especially suddenly, can do a number on you.

Personal anecdote warning: I have Crohn's, ate all meat for a year, and went through months of "adjustment", which was not at all pleasant. The payoff was worth it though. So, yeah, you can probably stand to give it a bit more time :)

If your bowel has been irritated by some of the usual suspects: wheat-gluten, soy or dairy products, please take into account that the irritating substances may stay in your body for a couple of weeks. Also be careful with the amount of fruit you have: although some fruit is accepted by most paleos, having many servings of fruit may cause bowel symptoms.

You might throw down some digestive enzymes and some probiotics. Give it a couple weeks; make sure you're being strict. A lot of newbs don't intake enough calorie. Also play with levels of fruit consumption. If it continues, it could be an uncommon food sensitive. Paleo covers the major culprits but it doesn't fix everything for everyone. Experiment!

This has been a problem that I found since starting the paleo path. Well over a year now - and finally, I have found that re-introducing some potato each day (not a lot - but some with at least one meal) has helped enormously. It was some articles about potatoes on Whole Health Source which gave me the idea...

Also, I have had to cut back on the amount of fat I am eating.

Result - IB much reduced, weight has remained constant (I had half expected to increase slightly, but no) and I'm eating a load more vegetable in general.

Did you start taking any supplements when you went paleo? Magnesium,zinc,vitamin c and fish oil in particular can all cause digestive upset.

Equally your problem could be caused by suddenly switching from a low fat to a high fat diet. Gradually increase your fat intake and your body should adjust in a few weeks.

I second the opinion on nuts. I found that nuts gave me digestive distress, yet they are allowed on the Paleo diet. So play with taking nuts out.