[Plugin: Front End Upload] Problem with files over 2 MB

First of all: thanks a lot for this great plugin.

I have a problem with uploads over 2 MB. These files are uploaded without problems, even the success message is displayed. But the file isn’t stored in the upload folder. The problem only exists with files over 2 MB.
I already checked the php settings and edited the following parts:

post_max_size=100M
upload_max_filesize=100M
max_execution_time=1000
max_input_time=1000

Does anybody know a solution? Thanks.

http://wordpress.org/extend/plugins/front-end-upload/