Hi Nikhil.
I think that you speak about "Internet Download Manager":
http://www.internetdownloadmanager.com/features.html ??
In my experience, that is The Best and The Fastest Download Manager!
Now, few words about your problem...
My first suggestion is to you check Settings in IDM's "Downloads tab":
- Check "Ignore file modification time changes when resuming a download" box
(is it now, on or off?)- Check Virus Scanner Program & Command line parameters
(is there anything, if yes - for which antivirus?)Feel free to experiment with different settings in these boxes, for example I'll first try to turn on "Ignore file..." & to delete all settings in "Check virus scanner & command line..."...
Let us know did this suggestions help you??
Regards,
S.