actually, I HAVE THE ANSWER!!
i was suffering this too, i defragmented my PC from control panel to make programs ru faster (works) and to free up more space, since then i could interact like 97.2% with drag and drop (and my internet was gay, i was connetced, and i new it cause i was downloading movies for free, but my Maxthon Web Brower (its faster than IE6) wouldnt connect!) oh and right clicking - i would do this the menu would flash on and go agen - so i had to just open start menu with keyboard (button right side of left ctrl) and then right clicking would be normal, but so would double clicking, draging wasnt working..
HERES HOW YOU FIX IT!!!!!!!
i just instantly got rid of it just now and saw that yuo guys needed my attention, so cause i like helping and i aint tight or sad go download CCleaner, a simple google surch would do it..
then open it - uncheck Internet Explorer (from the left of CCleaner in the grey shaded bit at the top, hey i like being spacific! it helps)
and just leave Windows Explorer Checked (and all the tihngs listed in the WIndows Explorer Menu, Not ADVANCED!!)
Then Click Anylise... it should pick up stuff, then clik run cleaner (next to anylise wich is at the bottom in the middle of CCleaer!)
then check if you get to drag icons!
if they dont - uncheck Windows Explorer and check INternet Explorer , do the same tinhg allover agen, u now wit the anylise and all that!
then check agen - if they still dont muve - uncheck internet explorer and check the ADVANCED box, you will get pop ups - they aint important just click yes to them all, then anylise - and run cleaner!
YOUR ICONS SHOULD DRAG, and by the way - if ya try and open ya task manager bu8t it says sometinhg about the administrator disabling it or something baisically and error, go google up xp_taskmgrenab.exe or just xp_taskmgrenab! works for all Windows! and im not sure about Mac, SHould work cause Macs are same layers as Windows.
Hope i helped - if not post up and heres a site if you need further assistance...i used it for many tihngs, i now the people who run the buisness, its a PC fixing site!
PLZ IF YOU HAVE A PROB GO THERE, and if ya dont trust me you cant trust them, cause you need to add them through MSN and give them your symptoms and they start a remote assistance (they can use their keyboard and mouse on yor comp by seeing your scree in a small window on theirs

)
but you need to turn off your firewall or open port 6689!
their site is gonna get a help desk (in forum) to be most best comp handling team ever... i would already put up my votes on them!
help advertise their site its:
if i helped, those guys now alot more like 20x more than me!
CYA
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