Zabbix Agent windows Mounted filesystem discovery problem

If I enable this feature zabbix falls to network errors.
[CODE] 1386:20120829:180101.758 enabling Zabbix agent checks on host [host]: host became available
1382:20120829:180107.819 Zabbix agent item [vfs.fs.discovery] on host [host] failed: first network error, wait for 15 seconds
1386:20120829:180125.933 Zabbix agent item [vfs.fs.discovery] on host [host] failed: another network error, wait for 15 seconds
1386:20120829:180144.032 Zabbix agent item [vfs.fs.discovery] on host [host] failed: another network error, wait for 15 seconds
1386:20120829:180202.144 temporarily disabling Zabbix agent checks on host [host]: host unavailable[/CODE]

It looks like that this is timeout issue.
Is it possible to grow timeout time for low level discovery?

When I run zabbix_get from command line it takes about 6 seconds to get data from host.

[B]WORKAROUND:
Timeout occurs in case of floppy disk presence. I have disabled floppy disk drive in system and timeouts gone away.
Hope this knowledge will help somebody else[/B]

It would be wonderful to skip disk A: or have ability to increase timeout for discovery.