Im having the same problem
Heres what I set in my php.ini

max_execution_time = 6000
max_input_time = 6000
memory_limit = 48M
register_globals = On
post_max_size = 800M
file_uploads = On
upload_max_filesize = 800M

I restarted my server after adding those settings. and even went into ssh and checked the file that the settings where there. It still says 100mb.
I havent had time to look through all of the settings in php.ini. So I have no idea whats wrong.

Any ideas?
Thnx