USB has suddenly slowed down to a snails pace

I'm not sure how this happened, but transferring anything, from either USB port, and via any device, has gone from fast (USB 2.0), to super slow. Recently, it has taken awhile for my My Book drive to show up, but the transfer speed has always been fine. Now, it just *****.
Anyone have this happen to them, or know of a solution?
TIA

results from user error or mistake powering down without unmounting first.
disconnect the drive. zap pram on the computer. hope this works and reconnect all and try again.
you could also try a power manager reset.

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Computer has suddenly slowed to a crawl

Hope you can help out there!
--MacBook has suddenly slowed down.
--Takes 2 minutes from login screen to seeing my desktop.
--Took 2 hours to repair permissions.
--Safari begins to start-up and then stalls. Have to re-start.
--Can't back up--Time Machine says "preparing" for 2 hours--I gave up.
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Any suggestions most welcome. THANK YOU.

Hello Robert:
As I indicated above, I think an archive and install would be something to seriously consider:
http://docs.info.apple.com/article.html?artnum=107120
An archive and install will install a fresh copy of OS X (which should be updated using the software update feature) while preserving your files, programs, and settings. As always, I strongly recommend a backup before any software update (Time Machine is a good solution).
An erase and install, IMHO, should be reserved for a disaster (I have never done one myself).
By the by, running GUI programs like OnYx (I have one that is pretty good - Cocktail), while not harmful, would not (IMHO) fix the sort of problems you describe. For example, OS X 10.5 runs the UNIX 'cron' (the daily, weekly and monthly processes mentioned above) automatically. There is no reason to manually initiate them. Also, the cache cleaning most of the GUI maintenance programs initiate may atually slow a system for a period of time. There is little or no reason to run any maintenance programs under OS X 10.5 - unless one is troubleshooting.
Barry

Why has my hp deskjet 2050 printer and scanner suddenly slowed down and printing one line at a time

why has my hp deskjet 2050 printer and scanner suddenly slowed down and printing one line at a time

This is usually indicative of a defective print cartridge. Suspect the black is low in ink or defective. Please check all cartridges.
Say thanks by clicking the Kudos Thumbs Up to the right in the post.
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I worked for HP but now I'm retired!

Sudden slow down in data transfer

I'm reading data from the hard disk on a Target PXI System (8106 RT) and sending it via Ethernet to a Host PC and writing it to its hard disk. I read a chuck of data from the Target, send it using TCP Write function. The Host uses the TCP Read function get the data and write it to its hard disk. Data is being transfer over a Gbit Ethernet. A total of 9 files ranging in size from 700 MB - 2 GB are being transferred. The process moves along at an adequate speed until it suddenly slows down to slower than a snail's pace in the middle of a file.
By using probes (see enclosures) I've been able to determine it take approximately 17 seconds between when the data is read on the PXI to when it is written on the Host. However, an iteration of the loop on the Target has increased to over 3 minutes. The CPU usage on the Target and Host are minimal, less than 1%. Memory usage on the Host is also small. Any suggestions on how to diagnose what has caused this sudden slow down?
Attachments:
Slide1.PNG ‏104 KB
Slide2.PNG ‏124 KB
Slide3.PNG ‏39 KB

I would recommend using smaller chunk sizes for your data transfers. I would recommend something inthe 10K to 50K range. I have done quite a bit of profiling for sending large amounts of data and I have found that it is better to send lots of smaller chunks rather than fewer large chunks. Also make sure that you are not automatically building up large buffers in your application if you are using shift registers. If you are reading from a file read the file in chunks and send the chuncks. Don't read the whole file in in one read. One experiment I ran resulted in a single read of a large file (2 MB or so) took something like 10 minutes to read it in one read. However it only took a couple of 100 ms to read the whole thing in 10K chunks. Same applies to wrinting very large chunks using the TCP write. You can easily get a timeout if you write 1 MB as a single write because the receiver has not consumed all of the data within the timeout period. However, multiple small writes will reset the timeout for each chunk written.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

Hi all, my mac's suddenly slowed down significantly - can anyone help?

Hi there, a couple of weeks ago my mac suddenly slowed down significantly. Since then I've installed the new operating system and that's helped a little but it's still not running as it should.
Here's my EtreCheck report. Any ideas you clever people?
EtreCheck version: 2.0.11 (98)
Report generated 8 November 2014 16:37:52 GMT
Hardware Information: ℹ️
MacBook Pro (13-inch, Mid 2012) (Verified)
MacBook Pro - model: MacBookPro9,2
1 2.5 GHz Intel Core i5 CPU: 2-core
4 GB RAM Upgradeable
BANK 0/DIMM0
2 GB DDR3 1600 MHz ok
BANK 1/DIMM0
2 GB DDR3 1600 MHz ok
Bluetooth: Good - Handoff/Airdrop2 supported
Wireless: en1: 802.11 a/b/g/n
Video Information: ℹ️
Intel HD Graphics 4000 -
Color LCD 1280 x 800
System Software: ℹ️
OS X 10.10 (14A389) - Uptime: 4:31:31
Disk Information: ℹ️
APPLE HDD TOSHIBA MK5065GSXF disk0 : (500.11 GB)
S.M.A.R.T. Status: Verified
EFI (disk0s1) <not mounted> : 210 MB
Recovery HD (disk0s3) <not mounted> [Recovery]: 650 MB
Macintosh HD (disk1) / [Startup]: 498.88 GB (375.82 GB free)
Core Storage: disk0s2 499.25 GB Online
MATSHITADVD-R   UJ-8A8
USB Information: ℹ️
Apple Inc. FaceTime HD Camera (Built-in)
Apple Inc. Apple Internal Keyboard / Trackpad
Apple Computer, Inc. IR Receiver
Apple Inc. BRCM20702 Hub
Apple Inc. Bluetooth USB Host Controller
Thunderbolt Information: ℹ️
Apple Inc. thunderbolt_bus
Gatekeeper: ℹ️
Mac App Store and identified developers
Kernel Extensions: ℹ️
/Library/Extensions
[loaded] com.sophos.kext.sav (9.2.50 - SDK 10.8) Support
[loaded] com.sophos.nke.swi (9.2.50 - SDK 10.8) Support
Launch Agents: ℹ️
[running] com.advent.BonjourAgent.plist Support
[loaded] com.oracle.java.Java-Updater.plist Support
[running] com.sophos.uiserver.plist Support
Launch Daemons: ℹ️
[loaded] com.adobe.fpsaud.plist Support
[loaded] com.adobe.versioncueCS3.plist Support
[loaded] com.microsoft.office.licensing.helper.plist Support
[loaded] com.oracle.java.Helper-Tool.plist Support
[running] com.sophos.common.servicemanager.plist Support
User Launch Agents: ℹ️
[loaded] com.adobe.ARM.[...].plist Support
[loaded] com.advent.ADVENT AiO Annual Opt.plist Support
[loaded] com.advent.ADVENT AiO Firmware Updater.plist Support
[loaded] com.advent.ADVENT AiO Software Updater.plist Support
[loaded] com.divx.agent.postinstall.plist Support
[failed] com.facebook.videochat.[redacted].plist Support
[loaded] com.google.keystone.agent.plist Support
User Login Items: ℹ️
iTunesHelper Application (/Applications/iTunes.app/Contents/MacOS/iTunesHelper.app)
AdobeResourceSynchronizer Application (/Applications/Adobe Acrobat 8 Professional/Adobe Acrobat Professional.app/Contents/Support/AdobeResourceSynchronizer.app)
Internet Plug-ins: ℹ️
JavaAppletPlugin: Version: Java 7 Update 51 Check version
OVSHelper: Version: 1.1 Support
Default Browser: Version: 600 - SDK 10.10
Flip4Mac WMV Plugin: Version: 3.2.0.16   - SDK 10.8 Support
AdobePDFViewerNPAPI: Version: 10.1.12 Support
FlashPlayer-10.6: Version: 15.0.0.189 - SDK 10.6 Support
DivXBrowserPlugin: Version: 2.2 Support
Silverlight: Version: 5.1.20513.0 - SDK 10.6 Support
Flash Player: Version: 15.0.0.189 - SDK 10.6 Support
QuickTime Plugin: Version: 7.7.3
SharePointBrowserPlugin: Version: 14.4.2 - SDK 10.6 Support
AdobePDFViewer: Version: 10.1.12 Support
DirectorShockwave: Version: 12.0.0r112 - SDK 10.6 Support
Safari Extensions: ℹ️
AdBlock
Ebay Shopping Assistant
Searchme
Amazon Shopping Assistant
DivX Plus Web Player HTML5 <video>
3rd Party Preference Panes: ℹ️
Adobe Version Cue CS3 Support
DivX Support
Flash Player Support
Flip4Mac WMV Support
Java Support
Time Machine: ℹ️
Mobile backups: ON
Auto backup: YES
Volumes being backed up:
Macintosh HD: Disk size: 498.88 GB Disk used: 123.06 GB
Destinations:
Expansion Drive [Local]
Total size: 319.73 GB
Total number of backups: 12
Oldest backup: 2012-10-05 16:41:40 +0000
Last backup: 2014-11-02 10:47:48 +0000
Size of backup disk: Too small
Backup size 319.73 GB < (Disk used 123.06 GB X 3)
Top Processes by CPU: ℹ️
      1% java
      0% Installer
      0% InterCheck
      0% AppleSpell
      0% SophosUIServer
Top Processes by Memory: ℹ️
289 MB loginwindow
236 MB com.apple.WebKit.WebContent
155 MB Safari
73 MB InterCheck
69 MB Finder
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40 MB Free RAM
1.48 GB Active RAM
1.47 GB Inactive RAM
631 MB Wired RAM
4.68 GB Page-ins
64 MB Page-outs

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I am employed by HP

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Remove the following garbage from your Mac.
"MacKeeper"
"Sophos"
"Symantec / Norton"
"Trusteer Rapport"
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Uninstall Norton Internet Security for Mac
Removing Symantec programs for Macintosh by using the RemoveSymantecMacFiles removal utility
RemoveSymantecMacFiles
http://www.trusteer.com/support/uninstalling-rapport-mac-os-x
http://www.sophos.com/en-us/support/knowledgebase/120838.aspx
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"App4Mac" is outdated and obsolete.
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USB has suddenly slowed down to a snails pace

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