One option is to go to the %USERPROFILE%\AppData\Local\Google\Chrome\User Data\Default
directory and delete the Top Sites
file (if using Chrome 14; in older versions it was called Thumbnails
), but that will remove also the other settings of the New Tab page.
A better option is to get SQLite and reset only the thumbnail data. Download the SQLite binary, unpack it to the above mentioned directory, and run the following command:
sqlite3.exe "Top Sites" "update thumbnails set thumbnail=null"
After that the icons on the New Tab page will be broken, but they will be updated after you visit each of the pages once.
3Fail for using JPEG for screenshots. – Hello71 – 2010-07-24T18:04:43.047
5indeed, it is the most important issue right now. it is absolutely unclear what the question is about without having the right .png screenshots. – akira – 2010-07-24T20:03:07.390