quota wrong in pleks panel

[roeschu]

Hi

- Debian Sarge with Plesk 8

I've enabled quotas on domains but it's still showing up "unlimited" behind Disk place in Plesk Panel

I've checked the following:

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./usrmng --isquotable gives back value 0, so therefore quota is enabled
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my /etc/fstab has defined quotas

/dev/sdb1 /data ext3 defaults,usrquota,grpquota 0
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aquota.user and aquota.groups file existing on the /data partition
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"quota username" console command gives back:

Disk quotas for user username(uid 10001):
Filesystem blocks quota limit grace files quota limit grace
/dev/sdb1 68 0 512000 17 0 0

so the quota is activated for this user under linux
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is it only a display fault in plesk panel that it shows still "unlimited" or what is wrong...?

thx for any help