Im assuming its wireless ?
The Lenovo Thinkpad is a line of primarily business and
performance laptops that have wireless capabilities offered in its standard
feature set.
The Thinkpads can have issues with the wireless such as poor
connection speed, undetected wireless cards and problems connecting to a
wireless network.
Slow Connection
A Thinkpad that can connect to wireless networks or
Internet may exhibit slowdown or performance issues when downloading or
transferring files.
A few possible fixes for this problem include reconnecting
to the wireless network, resetting your router or modem or moving away from any
devices that could interfere with your wireless connection.
No Connection
If the Thinkpad cannot connect to the wireless network at
all, it could have a software or a hardware issue.
Thinkpad laptops need the wireless receiver button switched
to the "on" position in order to pick up any wireless signals.
The operating system should pick up the wireless card
automatically but a driver or operating system update could fix any
compatibility issues between the OS, the network card and other devices on the
computer.
The Thinkpad will be unable to connect to your wireless
network if you are attempting to connect to the wrong SSID, network name or are
entering the wrong password.
Undetected Adapter
The incorrect installation of device drivers may lead to the
wireless adapter or card being undetected by the operating system.
Lenovo's support site, in Resources, contains the specific
wireless card drivers used by your Lenovo Thinkpad.
For third party PCMCIA wireless network adapters or wireless
USB dongles, the manufacturer of the device should have drivers to install. It
is possible that the adapter could have a hardware issue.
Most Thinkpads have the wireless cards integrated into the
motherboard, so you would need a complete motherboard or laptop replacement to
fix a physical problem.
http://www-307.ibm.com/pc/support/site.wss/migr-50402.htmlalso
Internet Explorer Download Problems
While most people use the Internet Explorer Web browser to
connect with the computerized world, some are unable to successfully download a
file, program or application with it.
There are ways to determine the cause of this problem.
Use the Disk Cleanup
The first avenue to take in determining the cause of
download inability is to clean your "C:" drive with your computer's
"Disk Cleanup" application.
To find it, click "Start", then follow
"Programs," "Accessories" and then "System
Tools."
Disk Cleanup will clean your hard drive by eliminating
broken file fragments and unnecessary files. These can cause your downloads to
be slow and, sometimes, broken.
Antivirus Programs
Another culprit that can prevent downloads are antivirus
or antispyware applications that you have installed. Shut those down, then
attempt your download again.
If the download completes, then remove the mentioned
applications.
Start-Up Programs
Sometimes, start-up programs can keep your download from
completing.
If you are running Windows Vista, click on Windows Defender,
then "Tools" and check "Software Explorer."
Then select "Start-up Programs."
If you find a program that is not necessary to run at
start-up, click "Disable."
Then click
"Yes" to confirm your choice.
Other Programs
Disable all other programs, then try the download again.
If your download can
be completed upon the disabling of these programs, and they are nonessential to
your Internet sessions, then keep them disabled via your task manager.
Explorer Add-Ons
Open your "Start" menu, then point your mouse on
"Programs."
From the pop-up menu, mouse over "Accessories" and
then "System Tools."
Then click on "Internet Explorer (No Add-Ons)."
If you are not running any add-ons (a page will appear
informing you), then this is not an issue with downloading.
Considerations
If none of these allow you to download efficiently,
consider trying a new browser such as "Firefox" or "Opera."
Also, consider the possibility that the page from which you
are downloading may have an internal error that can cause the download to be
aborted.
General Download Problems
http://inetexplorer.mvps.org/answers/40.html