What is the best physical orienttion for a new Dual Band II

I have a new AirPort Extreme (Simultaneous Dual Band II). It will be located above a drop ceiling in a hallway outside three rooms which need to be served by the Extreme. My question is this: Which will be the most effective physical orientation for the unit? (1) Sitting on the top side of the ceiling tiles --bottom of the Extreme facing downward into the hallway. (2) Mounted to the ceiling about 18 inches above the ceiling tiles --top of the Extreme facing downward into the hallway. (3) In a vertical orientation above the ceiling tiles --if this vertical orientation is best, then which of the four sides should face downward into the hallway and then --top or bottom toward the least served area --away from the served rooms. Or does it make any difference at all?

I would go for for option 2) to deliver best coverage.

Similar Messages

  • What is the best overhead projector for a new 13" MacBook Pro

    What is the best overhead projector for a new retina display macbook pro?

    The key issue you should be worried about is what's the best projector for the intended room/environment/audience you will be projecting from/to. The Mac is just a content provider and will always exceed the resolution capabilities of all projectors in the market so will have to downgrade its output to suit their reduced capabilities. 
    Only thing you may want to make sure is that the projector have digital HDMI input. That way you can plug the Retina in with just a cable and not need to purchase any intervening adapter dongle prone to failure or misplacement.

  • What is the best ABAP book for a new person?

    I need to recommend the best ABAP book for an experienced java programmer to come up to speed on ABAP.
    I thought this would be a good place to get some input.
    thx, J

    here are the few links related to ABAP stuff.
    <b>Books:</b>
    http://www.sap-press.com/product.cfm?account=&product=H958
    http://www.sap-press.com/product.cfm?account=&product=H959
    http://www.sap-press.com/product.cfm?account=&product=H975
    http://www.amazon.com/gp/product/0201750805/104-5839735-7788723?v=glance&n=283155&v=glance
    http://www.amazon.com/gp/product/1592290116/104-5839735-7788723?v=glance&n=283155&s=books&v=glance
    http://www.amazon.com/gp/product/0201675153/104-5839735-7788723?v=glance&n=283155&s=books&v=glance
    <b>Examples</b>
    http://www.sap-img.com/abap.htm
    http://www.sapdevelopment.co.uk/tips/tipshome.htm
    http://help.sap.com/printdocu/core/Print46c/en/Data/Index_en.htm
    http://sap.ittoolbox.com/nav/t.asp?t=322&p=322&h1=322
    http://sappoint.com/abap/
    <b>For FAQs in ABAP</b>
    http://www.sap-img.com/abap/more-than-100-abap-interview-faqs.htm
    <b>ALV</b>
    http://www.geocities.com/mpioud/Abap_programs.html
    <b>PDF Documents:</b>
    http://www.easymarketplace.de/online-pdfs-q-s.php
    http://www.consolut.de/saphelp/sap_online_help.html
    Regards,
    Srikanth
    Message was edited by: Srikanth Kidambi

  • What is the best RAID configuration for a MacPro as a Logic User?

    There ought to be a universal answer to this question: what is the best RAID configuration for Logic Mac Pro users? I will be more specific.
    I use Logic Studio, Reason, Ableton, and Motu Symphonic Instrument simultaneously.
    I want to fail safe my precious audio files and improve performance as the system reads/writes data from multiple files, from audio tracks to digital samples.
    I want to run video files simultaneously to do nifty audio soundtracking to video.
    Here is the configuration I have in mind.
    HD 1: OS and Logic Studio, Reason/Ableton samples etc. software (non-raid) (250 GB)
    HD 2/3: MIrrored RAID set for AUDIO FILES (500 Gb identical pair)
    HD 4: Video files / Bouncing (1 TB)
    Makes sense right? A disk for reading software. A pair of 500 GB disks for reading/writing audio files and sessions in mirrored array. A 1 TB disk for video and bouncing. The main question I have is, for audio files only, is striped or mirrored better? 64K blocks the best? And are there any more details. I assume to do this in Disk Utility.

    Well, both Mirrored and Striped have their pros and cons. If you use mirrored, it will offer no better performance than the spec'ed drive along with it's sata bus speed. The plus point is, if one drive goes down, you have the second as a backup as the complete contents of one drive are mirrored on the other.
    With striped you will get a performance boost because all files (for example a single project) will get written across both drives and hence split the load on the drives and the SATA busses. The drawback is that you'll have to make sure you have a good, regular backup schedule in place because when one of the drives goes to drive heaven, you're going to be stuffed without a full backup of both drives.
    Exactly what performance boost you'd get will depend on your project, number of files, size of files, fragmentation of files, track count etc. You may find it would be easier to use the 3 drives straight, with no raid and have:
    HD 1: OS and Apps. No samples at all.
    HD2: Audio Files for Logic projects
    HD3: Reason, Ableton, Logic etc instrument sample library
    HD4: Video and bouncing.
    Which is what I ended up doing although I use HD4 as an interchangeable backup for HD1 and 2.
    There is no universal answer to this as each must make their own choice based on their preferences and needs. Mirrored will give you full backup but on-site, in machine backup. Not much good if something untoward and drastic happens to the physical machine. I think a few people toy with striped RAID but fall on the side of using the drives straight, as in their projects they don't see a big enough gain over splitting the data across your 3 remaining drives without RAID. Studios that seriously consider raid often go out and get a dedicated raid that can offer more variations than raid 0 or raid 1 (Striped and Mirrored) and better throughput.
    I hope this helps a little and not just added to the dilemma.

  • What is the best "insurance" option for an iPhone?

    Hey all. So I'm almost at the point where I can finally afford getting myself an iPhone and I definitely don't have the funds to be able to replace it if something were to go wrong. So I'm wondering what is the best insurance plan for an iPhone? I'm not the clumsiest person, but I have been known to drop a gadget every once in a great while and I definitely don't want to break an iPhone.
    Apple obviously has AppleCare, but that doesn't cover physical damage. I know Best Buy's covers accidental damage, but that's 15 bucks a month...more than I'd like but that's a nice incentive. Are there any other good options that would cover physical damage? I used to work for Best Buy and I've never had any trouble with their BTP plans, I'm just not a huge fan of the idea of paying 15 bucks a month. Any other plans I don't know about?

    Safeware http://www.safeware.com/ specializes in laptop, etc coverage, including smartphones. I bought a laptop policy from them around 2002, but since I never had to claim on it, cannot speak as to their customer service or anything. A google on "smartphone insurance" may turn up more specialized companies.
    I recently noticed, and it was total news to me, that one of those credit cards I picked up in college for the free t-shirt and have had for 10-15 years, includes insurance coverage for my mobile phone. This particular card is branded AT&T and doubles as a calling card, and I'm guessing that's why. I haven't checked into the details, but people might keep an eye out for something random like that.
    I should ask my renter's insurance about the phone.

  • What is the Best Safari Version for OS 10.9.5 Maverick on a MacBookPro, 2.4Ghz, 8 GB Mem.?

    What is the best Safari Version for OS 19.9.5 Maverick on a MacBook Pro. 2.4 Ghz, with 8 gb memory?

    The best version for Mavericks, in fact the only version, is an integral part of OS X. In other words you already have it.
    Its version number is 7.1.5.
    Keep OS X up to date: Update OS X and App Store apps on your Mac - Apple Support

  • I am a new mac user and I switch to mac due to the graphics that it brings. I do website in pc and I heard iweb is the best.NOW i heard that iweb will be discontinue. so what is the best application there for website using MAC OSX lion?

    I am a new mac user and I switch to mac due to the graphics that it brings. I do website in pc and I heard iweb is the best.NOW i heard that iweb will be discontinue. so what is the best application there for website using MAC OSX lion?

    It is now confirmed  that iWeb, and iDVD, has been discontinued by Apple. This is evidenced by the fact that new Macs are shipping with iLife 11 installed but without iWeb and iDVD.
    On June 30, 2012 MobileMe will be shutdown. However, iWeb will still continue to work but without the following:
    Features No Longer Available Once MobileMe is Discontinued:
    ◼ Password protection
    ◼ Blog and photo comments
    ◼ Blog search
    ◼ Hit counter
    ◼ MobileMe Gallery
    All of these features can be replaced with 3rd party options.
    I found that if I published my site to a folder on my hard drive and then uploaded with a 3rd party FTP client subscriptions to slideshows and the RSS feed were broken.  If I published directly from iWeb to the FPT server those two features continued to work correctly.
    There's another problem and that's with iWeb's popup slideshows.  Once the MMe servers are no longer online the popup slideshow buttons will not display their images.
    Click to view full size
    However, Roddy McKay and I have figured out a way to modify existing sites with those slideshows and iWeb itself so that those images will display as expected once MobileMe servers are gone.  How to is described in this tutorial: #26 - How to Modify iWeb So Popup Slideshows Will Work After MobileMe is Discontinued.
    It now appears that the iLife suite of applications offered on disc is now a discontinued product and the remaining supported iApps will only be available thru the App Store from now on. However, the iLife 11 boxed version that is still available at the online Apple Store (Store button at the top of the page) and those still on the shelves of retailers will include iWeb and iDVD. Those two apps were listed in small, gray text on the iLife 11 box that I bought.
    Personally, if I didn't already have a copy I would purchase one to have it for reinstallation purposes if ever needed.
    This might be of some interest to you at this time: Life After MobileMe.
    OT

  • HT1338 What is the best online storage for photos. Specifically one that allows the original image quality to be downloaded should your hard storage goes belly up

    What is the best online storage for photos. Specifically one that allows the original image quality to be downloaded should your hard storage goes belly up

    I'd put them on an external hard drive(s) and burn them to a DVD as well (at least 2 - 3 copies on different drives/media); I prefer having control and a local solution instead of relying on a server and the possibility of someone (who shouldn't be)  downloading my work.

  • HT4664 What is the best graphics card for FCPX?

    In the nonstop anti-FCPX propaganda is an article of interest — posted 7/9/12 — comparing the benchmarks of FCPX and PP6.
    http://www.streamingmedia.com/Producer/Articles/ReadArticle.aspx?ArticleID=83582 &PageNum=1
    The system used was a 2 x 2.93 GHz Quad-Core Mac Pro from early 2009 running MacOS X version 10.7.4 with 12 GB of RAM and an NVIDIA Quadro FX 4800 graphics card with 1.5 GB of onboard RAM.
    In most cases PP6 outperformed FCPX with this configuration. However, in the comments Ben Balser pointed out that FCP X's A/VFoundation engine wasn't ideal on the NVIDA card:
    "Quadro is actually not the best card for FCP X's A/VFoundation engine, but great for CS6's Mercury engine, so the test is amazingly flawed right there. Try both on a 5780 card and watch things drastically change. I've done that test myself. Exporting to Compressor uses a MUCH more sophisticated encoding engine meant for higher level, professional transcoding, not simple outputs, which are faster using Export Media…"
    Apple lists this card on its support page: http://support.apple.com/kb/HT4664
    So,
    What is the best graphics card for FCPX?

    Ben,
    Thanks for chiming in on that article. It would be good to have a benchmark comparison with the two systems each with a preferred card.
    I'm hoping to see some other comparisons on this thread. Also, some links to other articles about best practices and configurations.

  • What is the best Compressor setting for best quality video playback on an iBook g4?

    I know the iBook and G4's in general are very outdated today, but I need to ask anyways. I have some video projects in 720p and 1080p in which I have down converted to 480p and also exported to MPEG-2 for DVD (personal wedding videos and videos made for my clients using Final Cut Studio). Anything encoded at most resolutions using h264 won't play on my iBook. Even 480p.
    I have about 20 hours of mixed video content that I need it in a format that is suitable for an iPhone 4 and an iBook 12" with a 1.2GHz G4, 1.25GB RAM and I added a 250 WD 5400 IDE hard disk (running 10.5.8 and 10.4.11 for Classic Mode). I know the iBook doesn't seem like the best tool for modern video playback, but I need to figure out which setting will play best with iPhone 4 and iBook so I don't need to make 2 local copies of each video for each device.
    The iBook plays best with the original DVD output MPEG-2 file and playing back in QT Pro or VLC... but I already have 180 GB's of MPEG-2 files now and my little HD is almost full. I don't have enough room to convert all the iPhone 4 counterparts. If I use Compressor 3.5.3, what is the optimal setting for iBook and iPhone .m4v or .mp4 files that can play on both devices? So far 720x400-480 widescreen videos @ 29fps works great on my iPhone, Apple TV 2, and other computers but seems to murder my poor iBook if encoded with high profile (and still choppy on simple profiles). 640x480 (adding black matte bars to my videos) plays fine in MPEG-2 but drops frames or goes to black screen if I convert it to mp4 (and looks bad on the iPhone 4 because of the matte). But if I convert on any of the simple profiles, it looks terrible on my iPhone 4 and a blocky on the iBook.
    This is the problem leading me to having 2 copies of each video and eating my hard disk space. What is the best video setting for both playback on the iBook and iPhone 4? Can the iBook playback H264 at all in decent resolutionsat all? I don't really want to have a 480p .m4v collection for the iPhone 4 and a MPEG-2 RAW collection just to play the same videos on the iBook.
    Any suggestions are greatly appreciated! Thanks!

    Update: The iBook can play any 480p video and higher if I encode them with DivX and in AVI format. But of course this is not compatible with my iPhone 4. At least I can shrink my library now and get away from the full MPEG-2s. I don't get why I can't use Apple's h264 though. There has to be a setting I am missing. The sample Apple h264 videos from the days of Tiger worked flawlessly on my iBook when it was new so the CPU must be capable of decoding it. I really can't understand this.
    Also, since I made my videos in English for my family, I had to create soft subtitles for my wife's Chinese family, and I can't get players like QT with perian or MPlayerX to sync them properly to an AVI encoded with DivX, they only sync well with the iPhone 4 m4v/mp4 formatted files I made. This is a real pickle.
    So now I may need three or four copies of each video, LOL. I need to hardcode the subtitles if I want to use AVI to playback on older machines, and keep the mp4 file for the iDevices too, while keeping higher quality h264 videos for my American relatives...
    If h264 is compatible with my iBook, what is the proper encoding settings? Must I dramatically lower the settings or frame rate? I can settle on 2 copies of each video that way. One iBook/G4/eMac compatible video that syncs correctly with my srt soft subs, and another version that works well with my iPhone 4 and iPad.
    All in all, I will end up with more than 3 or 4 version of each video. On my late G5 dual core I have the full 720-1080p uncompressed master files. On my i5 iMac I have the h264 compressed versions for distribution, and lower versions for my iDevices. Now I need to keep either full MPEG-2 files for the iBook to play, or convert to older formats like DivX AVI for our family's legacy machines. I am running out of hard disk space quick now, LOL.
    Is there an easier way?

  • What are the best plug ins for iMovie 11 running on Lion?

    What are the best plug ins for Imovie 11 or Imovie HD running  Lion? Especially transitions & effects for still pictures.
    Thank you

    Hi
    For iMovie'08 to 11 - There are no Plug-ins - not supported at all
    iMovie HD (in reality HD5) - doesn't work under Mac OS X.7 - at all
    iMovie HD6 - can take Plug-ins and run under Mac OS X.7 - BUT some of the Plug-ins doesn't work under X.7
    old list on - Plug-ins - Only relevant to  iMovie HD6 (May be they are too old)
    Stupendous software
    www.stupendous-software.com
    GeeThree   
    www.geethree.com
    cf/x.
    www.imovieplugins.com
    Apple
    www.apple.com/downloads/macosx/video/ezediapluginsforimovievol1.html
    www.imovieplugins.com/fxhome.html 
    fxStabilizer - for iMovie - Google it
    Yours Bengt W

  • What's the best thesaurus app for iPhone 4S?

    I'm looking for the best thesaurus app for my new iPhone 4S.
    The best I've seen listed to so far is the Oxford English version for $24.99 Canadian. All the rest are Roget II or those A-Z thesauri which I've never liked.
    I prefer the Roger's International Thesaurus (remember in school that yellow paperback thesaurus with the kangaroo on the front?) which has all the words divided by subject in the front, and all the words listed alphabetically in the back, subdivided by meaning, and have a number listed as to where it is in the front (ie GREEN noun greenness 44.1 verdigris 44.3 lawn 310.7 adjective inexperienced 414.17 new 841.7 etc etc etc).
    I would like to find an app version of that (320,000 words and phrases in 1072 categories according to the back of the book) or the closest version.
    Is there such a thing or is the Oxford English version the closest I will come to it? I consider this one of the most important apps I will put on my phone. Even more important than Facebook. haha

    depends
    some people dock to
    sync with their computer
    some to charge
    some to use audio out
    the answer to your question really comes down to what you are trying to do

  • What is the best video converter for DVD to iMovie? Either free or to purchase.

    What is the best video converter for DVD to iMovie? Either free or to purchase.  And one that is 'fool-proof' and very easy to use.  Many thanks, anyone who can advise.

    You want to 'reverse engineer' the compressed mpeg2 DVD file back to something iMovie can use?
    You need to convert the VOB files in the TS-Folder of the DVD back to DV which iMovie is designed to handle. For that you need mpegStreamclip:
    http://www.squared5.com/svideo/mpeg-streamclip-mac.html
    which is free, but you must also have the  Apple mpeg2 plugin :
    http://www.apple.com/quicktime/mpeg2/
    (unless you are running Lion in which case see below))
    which is a mere $20.
    Another possibility is to use DVDxDV:
    http://www.dvdxdv.com/NewFolderLookSite/Products/DVDxDV.overview.htm
    which costs $25.
    For the benefit of others who may read this thread:
    Obviously the foregoing only applies to DVDs you have made yourself, or other home-made DVDs that have been given to you. It will NOT work on copy-protected commercial DVDs, which in any case would be illegal.
    And from the TOU of these forums:
    Keep within the Law
    No material may be submitted that is intended to promote or commit an illegal act.
    Do not submit software or descriptions of processes that break or otherwise ‘work around’ digital rights management software or hardware. This includes conversations about ‘ripping’ DVDs or working around FairPlay software used on the iTunes Store.
    If you are running Lion:
    From the MPEG Streamclip homepage
    The installer of the MPEG-2 Playback Component may refuse to install the component in Lion. Apple states the component is unnecessary in Lion, however MPEG Streamclip still needs it.
    To install the component in Lion, please download MPEG Streamclip 1.9.3b7 beta above; inside the disk image you will find the Utility MPEG2 Component Lion: use it to install the MPEG-2 Playback Component in Lion. The original installer's disk image (QuickTimeMPEG2.dmg) is required.
    The current versions of MPEG Streamclip cannot take advantage of the built-in MPEG-2 functionality of Lion. For MPEG-2 files you still need to install the QuickTime MPEG-2 Playback Component, which is not preinstalled in Lion. You don't have to install QuickTime 7.

  • What is the best font size for text when making a book in iBooks Author? My present font is Baskerville at 20 pt.

    What is the best font size for text when making a book in iBooks Author? My present font is Baskerville at 20 pt.

    For what audience? What reading level? Which Flesch-Kincaid index? What type of content? How much white space? What language(s)?

  • What is the best virus protection for a Mac?

    What is the best virus protection for a Mac?

    1. This comment applies to malicious software ("malware") that's installed unwittingly by the victim of a network attack. It does not apply to software, such as keystroke loggers, that may be installed deliberately by an intruder who has hands-on access to the victim's computer. That threat is in a different category, and there's no easy way to defend against it. If you have reason to suspect that you're the target of such an attack, you need expert help.
    OS X now implements three layers of built-in protection specifically against malware, not counting runtime protections such as execute disable, sandboxing, system library randomization, and address space layout randomization that may also guard against other kinds of exploits.
    2. All versions of OS X since 10.6.7 have been able to detect known Mac malware in downloaded files, and to block insecure web plugins. This feature is transparent to the user, but internally Apple calls it "XProtect." The malware recognition database is automatically checked for updates once a day; however, you shouldn't rely on it, because the attackers are always at least a day ahead of the defenders.
    The following caveats apply to XProtect:
    It can be bypassed by some third-party networking software, such as BitTorrent clients and Java applets.
    It only applies to software downloaded from the network. Software installed from a CD or other media is not checked.
    3. Starting with OS X 10.7.5, there has been a second layer of built-in malware protection, designated "Gatekeeper" by Apple. By default, applications and Installer packages downloaded from the network will only run if they're digitally signed by a developer with a certificate issued by Apple. Software certified in this way hasn't actually been tested by Apple (unless it comes from the Mac App Store), but you can be reasonably sure that it hasn't been modified by anyone other than the developer. His identity is known to Apple, so he could be held legally responsible if he distributed malware. For most practical purposes, applications recognized by Gatekeeper as signed can be considered safe.
    Gatekeeper doesn't depend on a database of known malware. It has, however, the same limitations as XProtect, and in addition the following:
    It can easily be disabled or overridden by the user.
    A malware attacker could get control of a code-signing certificate under false pretenses, or could find some other way to evade Apple's controls.         
    4. Starting with OS X 10.8.3, a third layer of protection has been added: a "Malware Removal Tool" (MRT). MRT runs automatically in the background when you update the OS. It checks for, and removes, malware that may have evaded the other protections via a Java exploit (see below.) MRT also runs when you install or update the Apple-supplied Java runtime (but not the Oracle runtime.) Like XProtect, MRT is presumably effective against known attacks, but maybe not against unknown attacks. It notifies you if it finds malware, but otherwise there's no user interface to MRT.
    5. Beyond XProtect, Gatekeeper, and MRT, there’s no evidence of any benefit from other automated protection against malware. The first and best line of defense is always your own intelligence. With the possible exception of Java exploits, all known malware circulating on the Internet that affects a fully-updated installation of OS X 10.6 or later takes the form of so-called "trojan horses," which can only have an effect if the victim is duped into running them. The threat therefore amounts to a battle of wits between you and the malware attacker. If you're smarter than he thinks you are, you'll win.
    That means, in practice, that you never use software that comes from an untrustworthy source. How do you know whether a source is trustworthy?
    Any website that prompts you to install a “codec,” “plug-in,” "player," "extractor," or “certificate” that comes from that same site, or an unknown one, is untrustworthy.
    A web operator who tells you that you have a “virus,” or that anything else is wrong with your computer, or that you have won a prize in a contest you never entered, is trying to commit a crime with you as the victim. (Some reputable websites did legitimately warn visitors who were infected with the "DNSChanger" malware. That exception to this rule no longer applies.)
    Pirated copies or "cracks" of commercial software, no matter where they come from, are unsafe.
    Software of any kind downloaded from a BitTorrent or from a Usenet binary newsgroup is unsafe.
    Software with a corporate brand, such as Adobe Flash Player, must be downloaded directly from the developer’s website. If it comes from any other source, it's unsafe.
    6. Java on the Web (not to be confused with JavaScript, to which it's not related, despite the similarity of the names) is a weak point in the security of any system. Java is, among other things, a platform for running complex applications in a web page, on the client. That was always a bad idea, and Java's developers have proven themselves incapable of implementing it without also creating a portal for malware to enter. Past Java exploits are the closest thing there has ever been to a Windows-style "virus" affecting OS X. Merely loading a page with malicious Java content could be harmful. Fortunately, Java on the Web is mostly extinct. Only a few outmoded sites still use it. Try to hasten the process of extinction by avoiding those sites, if you have a choice. Forget about playing games or other non-essential uses of Java.
    Java is not included in OS X 10.7 and later. Discrete Java installers are distributed by Apple and by Oracle (the developer of Java.) Don't use either one unless you need it. Most people don't. If Java is installed, disable it — not JavaScript — in your browsers. In Safari, this is done by unchecking the box marked Enable Java in the Security tab of the preferences dialog.
    Regardless of version, experience has shown that Java on the Web can't be trusted. If you must use a Java applet for a specific task, enable Java only when needed for the task and disable it immediately when done. Close all other browser windows and tabs, and don't visit any other sites while Java is active. Never enable Java on a public web page that carries third-party advertising. Use it, when necessary, only on well-known, login-protected, secure websites without ads. In Safari 6 or later, you'll see a lock icon in the address bar with the abbreviation "https" when visiting a secure site.
    Follow the above guidelines, and you’ll be as safe from malware as you can practically be. The rest of this comment concerns what you should not do to protect yourself from malware.
    7. Never install any commercial "anti-virus" or "Internet security" products for the Mac, as they all do more harm than good, if they do any good at all. If you need to be able to detect Windows malware in your files, use the free software ClamXav — nothing else.
    Why shouldn't you use commercial "anti-virus" products?
    Their design is predicated on the nonexistent threat that malware may be injected at any time, anywhere in the file system. Malware is downloaded from the network; it doesn't materialize from nowhere.
    In order to meet that nonexistent threat, the software modifies or duplicates low-level functions of the operating system, which is a waste of resources and a common cause of instability, bugs, and poor performance.
    By modifying the operating system, the software itself may create weaknesses that could be exploited by malware attackers.
    8. ClamXav doesn't have these drawbacks. That doesn't mean it's entirely safe. It may report email messages that have "phishing" links in the body, or Windows malware in attachments, as infected files, and offer to delete or move them. Doing so will corrupt the Mail database. The messages should be deleted from within the Mail application.
    ClamXav is not needed, and should not be relied upon, for protection against OS X malware. It's useful only for detecting Windows malware. Windows malware can't harm you directly (unless, of course, you use Windows.) Just don't pass it on to anyone else.
    A Windows malware attachment in email is usually easy to recognize. The file name will often be targeted at people who aren't very bright; for example:
    ♥♥♥♥♥♥♥♥♥♥♥♥♥♥!!!!!!!H0TBABEZ4U!!!!!!!.AVI♥♥♥♥♥♥♥♥♥♥♥♥♥♥.exe
    ClamXav may be able to tell you which particular virus or trojan it is, but do you care? In practice, there's seldom a reason to use ClamXav unless a network administrator requires you to run an anti-virus application.
    9. The greatest harm done by security software, in my opinion, is in its effect on human behavior. It does little or nothing to protect people from emerging threats, but they get a false sense of security from it, and then they may behave in ways that expose them to higher risk. Nothing can lessen the need for safe computing practices.
    10. It seems to be a common belief that the built-in Application Firewall acts as a barrier to infection, or prevents malware from functioning. It does neither. It blocks inbound connections to certain network services you're running, such as file sharing. It's disabled by default and you should leave it that way if you're behind a router on a private home or office network. Activate it only when you're on an untrusted network, for instance a public Wi-Fi hotspot, where you don't want to provide services. Disable any services you don't use in the Sharing preference pane. All are disabled by default.

Maybe you are looking for