May be a Bug Plesk !

[thanh duy]

I have many VPS so it have a same error :

Unable to start (/c ""C:\Program Files\Parallels\Plesk\/admin/bin/sysinfo" all"): (5) Access is denied.
---------------------- Debug Info -------------------------------
0: plib\common_func.php3:1237
plesk_exec(string '""C:\Program Files\Parallels\Plesk\/admin/bin/sysinfo" all"', array, integer '1')
1: plib\common_func.php3:1237
lst_exec(string '"C:\Program Files\Parallels\Plesk\/admin/bin/sysinfo" all')
2: plib\common_func.php3:1181
util_exec(string 'sysinfo', array, string 'lst')
3: plib\class.StatInfo.php:233
StatInfo->_callSysInfo(string 'all')
4: plib\class.StatInfo.php:247
StatInfo->getSysInfo(string 'df')
5: plib\class.StatInfo.php:335
StatInfo->getSysDiskSpaceInfo()
6: plib\ui\indicator-disk-usage.php:17
plesk__indicator_disk_usage->renderHtml()
7: plib\IndicatorUIPointer.php:18
IndicatorUIPointer->accessItem(string 'INDICATOR', NULL null)
8: plib\UIPointer.php:601
UIPointer->access(string 'INDICATOR')
9: plib\dashboard\DashboardElement.php:1611
DashboardElement_indicator->renderHtml(object of type UserAdmin, NULL null)
10: plib\dashboard\DashboardElement.php:685
DashboardElement->renderHtml_indicators(array, object of type UserAdmin, NULL null)
11: plib\dashboard\DashboardElement.php:639
DashboardElement->renderHtml_common(array, object of type UserAdmin, NULL null)
12: plib\dashboard\DashboardElement.php:996
DashboardElement_top->renderHtml(object of type UserAdmin, NULL null)
13: plib\dashboard\Dashboard.php:255
Dashboard::renderHtml(object of type DashboardPreset, object of type UserAdmin)
14: plib\dashboard\DashboardForm.php:169
DashboardForm->assign(object of type DashboardPreset, object of type UserAdmin)
15: plib\dashboard\DashboardLocation.php:44
DashboardLocation->accessItem(string 'GET', NULL null)
16: plib\UIPointer.php:601
UIPointer->access(string 'GET')
17: htdocs\plesk.php:41

i had checked in administrator group .The hacker had added successful Network Service user to administrator group and he try to modify plesk .I coundn't fix by run modify from plesk installation or plesk reconfigurate .
how could i have issue for this ?