HDLoader Game Saves

[DJFury]

OK, I don't know if this has been covered already in old threads, but I couldn't find anything on it:

I currently have HDLoader with a Maxtor 160gb HD installed on a V7 PS2 with Magic V modchip installed. When playing Burnout 3 from the HD (mode 3 enabled) the game works fine 90% of the time, but occasionally when I save to memory card (I have standard Sony 8mb card) it freezes. I can't even reset the PS2 with the reset button, but instead have to turn it off and on using the power switch in the back. This never happens when I use the original Burnout 3 game disc. Anyone else ever have similar problems like this, whether using HDLoader, backups, originals, or any other games?