Kastil said:
The current party level in my game is 1-3, mainly because I had some people join on after the campaign has officially started. Most of the encounters I throw at them are going to be at least a CR2. Since I don't throw combat out every session (one of the reasons some of the players joined my game), I like the combat they do have to be a) challenging and b)something to make them work as a team. I have seven players currently but some tend not to show up every session (no xps for you!).
There are several schools of thought on the matter. Many folks, particular enthusiasts who spent a lot of time on the pervious editions, feel that 3e levels people too quickly. I personally don't fall in with that group, but I understand their feelings on the matter, I think.
First, I would be awarding RPing XP-awards, not just combat ones. It may only be a flat value, but it reinforces that style of play with your group, if that's your desire. Second, remember that having 13 CR-appropriate encounters is more rare than you might at first think. Remember that this figure doesn't include higher-EL encounters, which skew the xp numbers somewhat. Fighting the orcs may be a CR3 encounter, but slaying the boss orc in his lair may be a CR4/EL6 encounter, with the xp that goes with it.
If combat is an infrequent occurence in your game, skew the xp numbers as desired. Throw more difficult combats, possibly, since the players will be more willing to commit all of their resources to the battle. A large chunk of the expectation for some classes is the depletion of resources. Notice how a wizard will commit his full firepower in a city/town encounter versus his behavior in a dungeon environment, where he always keeps a few spells self-defense, escape or that unexpected enemy.
Every group is different. My group meets roughly 3-4 times a month, and balances combat and rp-ing. We've gone from 1st level (AH! A big rat!!) to 23rd level (Ahh! An Advanced Psionic Roper of Legend!). They've progressed this far in about 3.5 years. Other groups, such as Destans, only meet 2-3 times a year for marathon sessions and have leveled to about 12th in that same time period.
Find your comfort zone and roll with it. Them orcs ain't killiing themselves.