Didn't happen yesterday but it's back again today. Copying the URL of the ad at the top that IE is blocking gives the following:
Code:
http://ib.adnxs.com/if?enc=mpmZmZmZqT-amZmZmZmpPwAAAMDMzPw_NLQB2IAIzT81tAHYgAjNP848BUQcBb81PGcmdQkNXXOMMqpNAAAAAEIhAAC1AAAAQQMAAAIAAAAw-wQA0WMAAAEAAABVU0QAVVNEANgCWgBQCU0AbwoBAgUCAAQAAAAAeSEuXwAAAAA.&pubclick=http://googleads.g.doubleclick.net/aclk?sa%3Dl%26ai%3DB2mNOjDKqTZSqKoeH-QaY9MygB6nmgY8Cuei7sCC5nd-pQwAQARgBIAA4AVCAx-HEBGC5-MeA3AGCARdjYS1wdWItMzAxNzA0ODgyMjgzMjk2M7IBDXB3bi5jdXJzZS5jb226AQk3Mjh4OTBfYXPIAQnaATNodHRwOi8vcHduLmN1cnNlLmNvbS9nb29nbGU4ZGVmYXVsdHNJTlRMNzI4eDkwLmh0bWyYAjLAAgTIAvGLrxuoAwHoAx7oA7YC9QMAAABMgAbAsYr584rqqvAB%26num%3D1%26sig%3DAGiWqtxsgx3co0R62akpdehinH2FKJjfZg%26client%3Dca-pub-3017048822832963%26adurl%3D&tt_code=vert-30&udj=uf%28%27a%27%2C+15933%2C+1302999692%29%3Buf%28%27r%27%2C+326448%2C+1302999692%29%3Bppv%2812110%2C+%273872819823520333006%27%2C+1302999692%2C+1304209292%2C+66956%2C+25553%29%3B&cnd=!wxDnvwiMiwQQsPYTGAAg0ccBKE0xWEINif0dxD9CCggAEAAYASABKAFCCwjOXhAAGAAgAygBQgsIzl4QABgAIAIoAUgBUABY0BJgAGjBBg..&referrer=http://pwn.curse.com/google8defaultsINTL728x90.html