Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
OK, I think before we go any farther, let's do the steps I listed in Post #21 above.

Relaunching Finder will likely have no effect whatsoever, but it never hurts. If that doesn't clear anything (and again, I really don't think it will), then do the PRAM reset.
 
Honestly it's looking like it might be time to do a fresh OS X install. Normally that's not necessary and it's a last resort, but with the number of problems you are having it might be easier in the long run. Also if there is someone here you really trust, you might try giving them access to your machine via iChat screen sharing. Then they can just poke around and see what's happening wihout all this slow and error-prone back-and-forth. I do this with my mom's iMac from 3,000 miles away and it's soooo much easier than trying to talk her through troubleshooting.
 
OK, I think before we go any farther, let's do the steps I listed in Post #21 above.

Relaunching Finder will likely have no effect whatsoever, but it never hurts. If that doesn't clear anything (and again, I really don't think it will), then do the PRAM reset.

Yeah, no luck...:confused:
 
One last thing before doing an OS reinstall (which won't be as painful as it sounds). Create a new user account with the same privileges as your current user. Log off (or restart) and log in to that new user account, see if anything changes.
 
One last thing before doing an OS reinstall (which won't be as painful as it sounds). Create a new user account with the same privileges as your current user. Log off (or restart) and log in to that new user account, see if anything changes.

same problems
 
OK, at this point with the multitude of glitches you're seeing, I think an OS reinstall is the cleanest way to get a fresh start.

With your MBA you got two disks, one of them is "Disk 1", the install disk. Assuming you have the MBA drive, insert that into the drive and reboot, holding the "C" key down as soon as you hear the chime. The Mac will present the HDD and the Install DVD as boot devices.

Select the Install DVD and when prompted to install, you'll have three choices: Clean Install, Archive & Install, and Upgrade. You want to select Archive & Install. This will leave all your user settings, applications, and documents as they were, and install a fresh System folder and move the old system into a Previous System folder. The Previous System folder can normally be discarded safely.

If you can't install for whatever reason (don't have an MBA drive, for example), or the reinstall does not correct your problems, get thee to an Apple Store. The MBA is certainly under warranty, and this is something that Apple should be looking into. Other possible causes for these issues are a dodgy logic board, bad RAM, or failing HDD, in decreasing likelihood.
 
Basically, whenever I use one or two particular free wi-fi locations (that I like), I can not use safari at all without continuously turning on and off my wireless connection or press the Renew DHCP Lease button.
I am also at times being redirected to other websites than the ones I select. (minor problem of the two)

Any suggestion?

first, as it has been said above, there are no viruses for macs.
by reading this above, i propably know what ur problem is. Its a widespread airport problem that many many users (including me in the past) encountered. I hope i could give you the solution that worked for me, but im running tiger. Maybe im wrong, but you better google "apple airport fix" or something, it might help

edit: plug your computer to ethernet and if it works normal, thats the case
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.