Slow fill is very common.
Read this.
http://www.contour.org/ubbthreads/showflat.php?Cat=&Board=trouble&Number=1205885&Forum=trouble&Words=tank%20fill&Match=And&Searchpage=0&Limit=25&Old=3months&Main=1205883&Search=true#Post1205885
In addition, has the P0442 returned since the fill up? If not, don't worry about it, a loose gas cap can cause that too. Make sure you tighten the cap at least 3 clicks. If it returns again, you may want to try a new gas cap first (or have your friendly emissions inspector test the gas cap for you).
