Gran Turismo 5 just released patch 1.08. As always, GTPlanet has the info.
"The latest GT5 update, v1.08, has just gone live in Europe and North America (it became available in Asia earlier today). According to Polyphony Digital, this small patch only fixes one issue that has become something of a hot-topic in our forums over the past few days. Known as the “SSR7 glitch” or the “online money glitch”, it allowed players to quickly accumulate a lot of money and A-Spec experience points -- check the video above to see how it was done."