Resolved Problems with software update

Hi guys. Really need your help

Just returned from my vacation and tried to update my Mac Pro in the office. Software update starts, shows me available updates, I click "install" and the download starts but as far as I can see it downloads only part of file and then I see the following message:

"The update could not be verified. It may have been corrupted during downloading. The update will be downloaded and checked again the next time that Software Update runs. "

It doesn't depends on which particular update I'm trying to install, whether I nstall 'em separately or all together. I thought for a while it was a sort of connection problem, but now I'm home and I have the same damn message on my Mac Air... And it looks 100% the same way it looked few hours ago in my office with different (sic!) Mac...

Dunno what to think... Internet connection seems to be working fine, everything looks like normal...


System Software Overview:

System Version: Mac OS X 10.7.4 (11E53)
Kernel Version: Darwin 11.4.0
Boot Volume: Macintosh HD
Boot Mode: Normal
Secure Virtual Memory: Enabled
64-bit Kernel and Extensions: No
Time since boot: 10 days 22:47

----------

Oh my... Problem solved by rebooting... Old good days and Win 95 are coming back, now in Apple mask