Minitube not working in Lubuntu 13.04 720p 1080p HD: May be buffering issue

Minitube crashing in Lubuntu 13.04 720p 1080p. It seems to be a buffering issue. I have slow high-speed Internet of 1 Mbps. At 720p and 1080p videos often stop 2-3 times/minute to buffer/download further.

The same video will play in full at 360p but crash after few seconds at 720p, and after fewer seconds at 1080p. If I pause the video at the very beginning, it is able to buffer a bit more of the video and plays a bit longer before crashing.

So, there is definitely a problem when the video stop playing to buffer. It seems that Minitube crashes when it stops playing and tries to buffer after the initial start of the video.

I hope the problem can be fixed. I cannot play any HD videos.
Note: If you have higher-speed Internet, it will likely not happen.

ProblemType: Bug
DistroRelease: Ubuntu 13.04
Package: minitube 1.9-1
ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4
Uname: Linux 3.8.0-27-generic i686
ApportVersion: 2.9.2-0ubuntu8.3
Architecture: i386
Date: Fri Jul 26 11:52:07 2013
InstallationDate: Installed on 2011-11-15 (618 days ago)
InstallationMedia: Lubuntu 11.10 "Oneiric Ocelot" - Release i386 (20111012)
MarkForUpload: True
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: minitube
UpgradeStatus: Upgraded to raring on 2013-04-26 (90 days ago)