It is very likely out of collimation.
Find a nice medium-bright star, focus on it and rack the focuser out until you see a pattern something like this ....
http://www.iceinspace.com/image_zoom...XdTE4dC5qcGc=#
If you dont see concentric circles on stars either side of focus that is the proof. If these "circles" look triangular it is likely indicative of a pinched primary mirror, meaning the mounting clamps are too tight and distorting the mirror.(very common). The clips should only be tight enough to stop the mirror slopping about ie just touching it , but not clamping it down hard.
The secondary mirror should be directly under the focuser and appear as a perfect circle when looking square into the focuser.
You should be able to see all of the main mirror centred in the secondary mirror when you look square into the focuser (without an eyepiece)
Get yourself a plastic canister of the type that 35mm photo film comes in. Cut most of the bottom out of it leaving some material to give the walls some strength. Drill a small hole ( no more than 3mm) in the dead centre of the cap. This will fit a standard 1.25" focuser almost perfectly and will be a better collimation tool than a laser alone.