First how do you activate safe mode
Activating Safe Mode
Spoiler
Step 1: Turn off the PLAYSTATION 3 by holding the Power button on the front of the unit till the Power light is red.
Step 2:
1. Touch and hold the Power button, you will hear the first beep, meaning the PLAYSTATION 3 is powering on.
2. Continue to hold the Power button and after about 5 seconds, you will hear a second beep, indicating the video reset.
3. Continue to hold the Power button and after about another 5 seconds you will hear a third beep and the system will power off (Power light is red).
Step 3:
1. Touch and hold the Power button, you will hear the first beep, again for the PLAYSTATION 3 to power on.
2. Continue to hold the Power button and after about 5 seconds, you will hear a second beep for video reset.
3. Continue to hold the Power button and after about another 5 seconds you will hear a quick double beep. At that point release the Power button. If you succeeded in activating Safe Mode, you will see a message on the screen saying, "Connect the controller using a USB cable and then press the PS button."
Step 1: Turn off the PLAYSTATION 3 by holding the Power button on the front of the unit till the Power light is red.
Step 2:
1. Touch and hold the Power button, you will hear the first beep, meaning the PLAYSTATION 3 is powering on.
2. Continue to hold the Power button and after about 5 seconds, you will hear a second beep, indicating the video reset.
3. Continue to hold the Power button and after about another 5 seconds you will hear a third beep and the system will power off (Power light is red).
Step 3:
1. Touch and hold the Power button, you will hear the first beep, again for the PLAYSTATION 3 to power on.
2. Continue to hold the Power button and after about 5 seconds, you will hear a second beep for video reset.
3. Continue to hold the Power button and after about another 5 seconds you will hear a quick double beep. At that point release the Power button. If you succeeded in activating Safe Mode, you will see a message on the screen saying, "Connect the controller using a USB cable and then press the PS button."
You should see a list of six options, the only ones you want to touch are the first option that simply restarts the ps3 and the third option. Restore File System which attempts to repair the area where files are saved and it clears corrupted data, its basically like defragging your hard drive. This can greatly improve the performance for sometime, if possible when you experience an extreme slow down save at that moment before going off to restore the file system. Now the other options will delete save data however restoring the file system will only delete data that can't be recovered.[in which case it have been useless to you anyway]. This is not a permanent fix but I've had it take an area that had slowed to a snails pace and bring it back to normal speed.
Tip number #2.
Delete your gamedata[not saved data] and decline to install patch 1.01. That alone should do more for your freezing issues than anything.