Attachments get truncated


I have finally got my first RT installation to work(almost). I have installed RT3.0.6 using all the default install settings. I use
Apache 2.0.40
Perl 5.8.0
MySQL 4.0.15

Everything seems to work fine except for attachments.

When I mail an attachment the attachment is truncated when the mail is forwarded to another address by RT. I have tested it by mailing CSV files and they are truncated at about 4kb.