Please give some more detailed information about the memory you are using. 133MHz is the default actual clock speed of DDR-266 memory (266MHz is the effective speed because it is "double data rate" memory). The tcl, trcd, tras stuff are the different timings for the memory. This is only an informational message letting you know what it is running the memory at. That is why I asked if you could get more detailed information about what type of memory you have so you can determine if the motherboard is setting your RAM settings correctly or not.
Are you having any problems with the system besides seeing this message? Does it still boot up and run fine?