Sometimes when I update an app through Market the download gets stuck at 0% or 100% and won't finish download or finish installing. The only way I've found to work around this is to uninstall the app, then reinstall from Market. Is there a better way to fix this situation?
If you have a lot of downloads stalled change the connection type between 2G and 3G/4G within
Settings > Wireless & networks > Mobile networks > Use only 2G networks > Klick the checkbox
or turn Wifi off and on again. Also this keeps your stalled downloads in queue.
Also logging out and back into GoogleTalk has proven a successful solution to this issue sometimes.