Yes, SWFplayer will freeze if the file's above 1MB, & the browser will tell you that there's not enough memory, & that to go to Tools>Settings>View Setttings>Conserve Memory>On. If that option is enabled & there's still not enough memory, the image quality will be reduced & the page will refresh. If there's no way the file can open completely, the loading will stop but the elements already loaded will stay.
Netfront Beta 4 loads more than 10MB, but the cursor begins moving slowly & buggily.
When I browse on my PSP, I press the cancel button (X) when the page is loading & the screen is white, so everything appears but in basic HTML type [but it works!
It also depends on your PSP type. PSP 1000 series systems have 32MB RAM, which is very little; however, all other PSP models have 64MB RAM, which is better. It depends: Can you tell me what the files are or upload them so that I can find you a solution? Good Luck