Rkhunter interpretation.

Hi ladies and gentlemen

Today I've ruing rkhunter. At first sight, there is no reason why should be worried about, no infection signs. But the output has made me cold. What do you think?
(In order not to be nasty, I only paste the sections I consider, "worring")

[09:13:23] Info: Starting test name 'properties'
[09:13:23] Performing file properties checks
[09:13:33] /usr/bin/lwp-request [ Waing ]
[09:13:33] Waing: The command '/usr/bin/lwp-request' has been replaced by a script: /usr/bin/lwp-request: a /usr/bin/perl -w script, ASCII text executable

Checking /dev for suspicious file types [ Waing ]
[09:15:26] Waing: Suspicious file types found in /dev:
[09:15:26] /dev/shm/pulse-shm-3962536165: data
[09:15:26] /dev/shm/pulse-shm-1118256300: data
[09:15:26] /dev/shm/pulse-shm-3224080157: data
[09:15:26] /dev/shm/pulse-shm-1678443143: AmigaOS bitmap font
[09:15:26] /dev/shm/pulse-shm-3853350153: data
[09:15:26] /dev/shm/pulse-shm-1796757104: data
[09:15:26] /dev/shm/pulse-shm-574886: data
[09:15:26] /dev/shm/pulse-shm-4018859456: data

[09:15:52] System checks summary
[09:15:52] =====================
[09:15:52]
[09:15:52] File properties checks...
[09:15:52] Files checked: 149
[09:15:52] Suspect files: 1
[09:15:52]
[09:15:52] Rootkit checks...
[09:15:52] Rootkits checked : 365
[09:15:52] Possible rootkits: 0
[09:15:52]
[09:15:52] Applications checks...
[09:15:52] All checks skipped
[09:15:52]
[09:15:52] The system checks took: 2 minutes and 31 seconds
[09:15:52]
[09:15:52] Info: End date is jue jul 7 09:15:52 CEST 2016

I have to say that nmap does not dettect anything (all ports are closed)

And command netstat -plnt shows just the usual port 53 opened.

I have to say that the current version I am ruing is Ubuntu 16.04, with TLP mounted and the guess account deactivated as it follows:

http://ubuntuhandbook.org/index.php/...-ubuntu-16-04/

What do you think?

Thanks a lot.