jaunty - errors in terminal

[mosaic2s]

Jaunty installed from CD. Great - no issues. But on to next step, I stumble.

linux@chota-rajan:~$ sudo apt-get install mozilla-thunderbird
Reading package lists... Done
Building dependency tree
Reading state information... Done
The following extra packages will be installed:
thunderbird
Suggested packages:
thunderbird-gnome-support latex-xft-fonts
The following NEW packages will be installed:
mozilla-thunderbird thunderbird
0 upgraded, 2 newly installed, 0 to remove and 51 not upgraded.
E: Could not get lock /var/cache/apt/archives/lock - open (11 Resource temporarily unavailable)
E: Unable to lock the download directory

How to resolve this?

[Partyboi2]

Hi, make sure that you only have one package manager open at a time eg apt-get, synaptic, dpkg...

[mosaic2s]

Thanks. was getting stuck with video driver installation and thunderbird installation.