Lindsay Lohan is back in LA after her trip to NY, and she wasted no time hitting the town and grabbing dinner at Nobu last night. She caused a stir earlier in the week when she used Twitter to accuse Justin Timberlake of cheating, but the starlet is already backtracking. She said, "I would not discuss my personal life, let alone someone else's, on the Internet! Clearly! Twitter needs to fix their s--t. I didn't write 'jb cheater!' What does that even mean? It's annoying." This isn't the first time LL has had issues with a social networking site, but it doesn't seem to stop her from trying them all out.