Fetchmail process does not end properly

[flippertom]

Hello,

We are using OTRS 5.
The fetchmail process usually ends with a message 'Done' on the command line as soon as all the mails are fetched.
Recently, it kind of hangs for few minutes after the last mail is imported. 'Done' message takes about 3-5 minutes to appear.
This does not happen every time but is seen quite often.
Anyone else faced this or any ideas what might be causing this?

Regards,
Tom.