Are you using the net at home or at school?
And, have you tried doing disk defragment lately since a new laptop needs to install a lot of new programs, scattering files all over which will cause everything to be slow/sluggish over time even if it's /new/.
From the specs, your system should be able to handle LT without a problem.
I have a 3 gig RAM + T7250 @ 2.00GHz and using a wireless router and Latale runs smoothly w/o lag (sans the random lag spike that I get).
Next up: Jan 05 Update Review