PC slowdowns, lengthy startups and sluggish browsing are the most common peeves of computer users, according to antivirus software provider Bitdefender. To pinpoint the causes of common gripes, the security company outlined the top 10 technical problems that users face with their computers. Most users complain their PCs are aging and can no longer cope with newly installed software because of poor processors and RAM memories. A common phenomenon that slows computers down is crowded toolbars, software preinstalled by the manufacturer and programs that users don.t really need but are installed with free tools or accidentally downloaded.”]