Update Manager - Package Failed (ubuntu 11.10)

I'm currently running Ubuntu 11.10 and it has been working flawlessly. For the last couple of weeks when I've been trying to update the software with Update Manager, the files seem to be downloaded. When I go to install the new software updates I continually get the same error "package operation failed".

Here are the details in the report:

installArchives() failed:
Extracting templates from packages: 17%%
Extracting templates from packages: 34%%
Extracting templates from packages: 51%%
Extracting templates from packages: 68%%
Extracting templates from packages: 85%%
Extracting templates from packages: 100%%

Preconfiguring packages ...

Extracting templates from packages: 17%%
Extracting templates from packages: 34%%
Extracting templates from packages: 51%%
Extracting templates from packages: 68%%
Extracting templates from packages: 85%%
Extracting templates from packages: 100%%

Preconfiguring packages ...

Extracting templates from packages: 17%%
Extracting templates from packages: 34%%
Extracting templates from packages: 51%%
Extracting templates from packages: 68%%
Extracting templates from packages: 85%%
Extracting templates from packages: 100%%

Preconfiguring packages ...

dpkg: error: parsing file '/var/lib/dpkg/available' near line 13361 package 'python-pycurl':

 field name `Arch' must be followed by colon

Error in function:

Any help would be appreciated...