I bought this router after reading the review on smallnetworkbuilder.com, where it was rated the fastest WIFI router at the time.  The review has been accurate in my case and I have seen an improvement in both range and performance over my previous WRT 350N  router.On the downside like many reviews I read I found the firmware to be unstable.  That is within the first 24 hours the router had dropped all the wireless connections in the house and devices were not able to connect consistently.  Having read many reviews and some forums I knew this was a possibility but I also new that I had options.  There are 3 alternative firmware versions available that will all work on this router so if the stock asus firmware is not fitting the bill you have a choice of Merlin, Tomato or DD-WRT.  At this point however a simple update to the latest Asus firmware resolve my problem and the router has been stable since that time.There are some other things I do not like about the Asus software:Parental Controls - The only option here is to set a calendar of access times.  The Web 2.0 interface is awkward and you must set a different schedule for each MAC address.  I found it time consuming and problematic.  I would have preferred to create an access class assign the schedule to the access class and then assign the MAC address to the class.  But at least I was able to disable WIFI during nighttime hours so my children aren't watching HULU or worse all night in bed.Static IP - While it gives you the ability to create leases, you cannot name them.  And as such the DNS from the router will not serve a name for them.  This has been a feature I have used for a while and has been available on every previous router that I have purchased.  It makes it easy to setup a static entry for my ReadyNAS, and networked Xerox printer and then access them in a browser by name instead of IP.  All of the alternative firmwares provide this capability so I will likely switch to one of them, going to try Merlin first as it has the best performance.QoS - I really don't get it, why would you invent your own version of QoS when a standard 802.11Q already exists and would make your device compliant with other devices that also support the standard such as my 24 port gigabit switch.  The lack of this feature has effectively nullified the capability on my 24 port switch as I have no congestion within the switch, only when accessing the internet.  Instead they provide a very dumbed down custom QoS implementation that has been very buggy by all reports.  I am hoping that I might be able to get 802.11q with DDWRT or Tomato, but doubt that Merlin will provide it.In general the interface is just simplified, and it is clear that it was intended for the novice user.  Some advanced features are available, but for the most part it is designed for the non-technical user.To be clear, I find the problems above endemic across all SOHO offerings.  They are adequate, but dumbed down for grandma to the point they do not work the way a technologist would expect.  Based on the performance I am seeing with update firmware, I can highly recommend this if you need a Dual Band WIFI router, I have deducted 1 star because you will need to flash the firmware to get it to be stable. 

Question: What is the small problem?
Answer: I found it time consuming and problematic