In this case, Plaintiff made such a persuasive argument that Supreme Court granted summary judgment and the AD affirmed.  Failing to tell a client about title problems is legal malpractice, says the AD in Ehrenhalt v Kinder ; 2011 NY Slip Op 05194 ; Decided on June 16, 2011 ; Appellate Division, First Department . 
 

Put simply:  "Defendant’s failure to inform plaintiff of the defects in title to the apartment when he learned of them was a failure "to exercise the ordinary reasonable skill and knowledge commonly possessed by a member of the legal profession," and this failure resulted in actual damages to plaintiff (see AmBase Corp. v Davis Polk & Wardwell, 8 NY3d 428, 434 [2007]).

Defendant’s contention that plaintiff’s motion is premature because more discovery is required is unsupported by any evidence suggesting that additional discovery will lead to further relevant evidence (see CPLR 3212[f]; Zinter Handling, Inc. v Britton, 46 AD3d 998, 1001 [2007]; Duane Morris LLP v Astor Holdings Inc., 61 AD3d 418 [2009]). "