Since last Week i can no longer drag and drop anything on my Windows XP system, not even desktop symbols or tabs in firefox.
It can be related to a windows update as i made one shortly before the problems began. After rebooting for the update i got "System has to be checked with chkdsk" while booting and after finally reaching windows it told me that some system files had been restored.
It's my workplace PC and the responsible IT guy is still on vacation until next week and noone else has access to the Windows CDs for reinstall or repair (and that in a multimillion-euro company...).
A few days later i noted that also all .NET versions except for 4.0 seem to have disappeared and i seem to be unable to reinstall them, the setup always exits with an unexpected error, so there might be some deeper problem i can't find.
The PC is protected with truecrypt (which i don't think has anything to do with the problem, but, well...) and has kaspersky anti-virus with current signatures. The System is Windows XP with the current SP (3, i think).