can't attach file larger than 100k

[Migrated From Jforum.net]

I upgraded my JForum from 2.0.2 to 2.1.4. Everything works fine, except I can't attach file larger than 100K(not sure about the limit, I tried file of size 60K or 40k works, but 200K or 2MB not work).

I set the quota limit to 5M (even 500M), and assign it to users, I can see it in the table jforum_quota_limit. But still not working. I am using MySQL 4.0. Can anybody help? Thanks!
[originally posted on jforum.net by dostoevsky]

[Migrated From Jforum.net]

Problem solved. Found a previous post about this issue. Created a 'tmp' directory in root of application context.

Another annoying fact, after created a forum, I have to update the group permission by just saving it without changing anything, or I won't see "Attach Files" button
[originally posted on jforum.net by dostoevsky]