I did have the same problem before, then i did the time zone glitch, it works, I was able to get 200% login in 4 hours period, Here is the method for changing the time zone to get the 200% login bonus. As posted in another thread of a similar name:
1. Enter the game normally, receive the 110% bonus.
2. Save the game by changing into a different car and letting the game save automatically after.
3. Open the XMB, go to Time and Date Settings under Settings far left before Users, this will need the game to quit.
4. Go to Time Zone. Change this so that wherever you are your PS3 clock will show just before midnight. Something like 11:xx pm , do not change your time clock, only time zone.
5. Enter the game, wait until past midnight, accept the next bonus, repeat steps 2-5 again until you're at 200%. Which means going back to the time zone set up and choosing a city that has one hour extra than the one you choose before, which will bring the time again to 11:xx pm. You can play your game or watch tv while you wait the time to pass.
You don't have to wait until midnight to do this, you can do it in mid-day or evening, just choose any time zone that will bring midnight time to you console clock as 11:xx pm.
Some time zones are in half hours and quarter hours, so that will speed things up even more.
