I have three completed tasks stuck with the status - Uploading (suspended - user request). This machine has been running for a long time (years) and I'm not aware of making any changes to WCG.

I have gone into the Activity menu and the Network Activity always available is checked. Tools / preferences /network usage shows either zero or null values, except for Max Additional work buffer (2 days).

There is one pending validation task that has a numeric value for device name. The execution time for that task is 11 hrs, which points towards coming from the problem system. All other tasks have device names that match either my XP or my Win7 machine.

Problem system - Win XP, BOINC 7.0.64, Dell P4 system

12/10/2013 5:11:15 PM | | Starting BOINC client version 7.0.64 for windows_intelx86
12/10/2013 5:11:15 PM | | log flags: file_xfer, sched_ops, task
12/10/2013 5:11:15 PM | | Libraries: libcurl/7.25.0 OpenSSL/1.0.1 zlib/1.2.6
12/10/2013 5:11:15 PM | | Data directory: C:\Documents and Settings\All Users\Application Data\BOINC
12/10/2013 5:11:15 PM | | Running under account Nancy Smith
12/10/2013 5:11:15 PM | | Processor: 2 GenuineIntel Intel(R) Pentium(R) 4 CPU 2.80GHz [Family 15 Model 2 Stepping 9]
12/10/2013 5:11:15 PM | | Processor features: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss htt tm pbe
12/10/2013 5:11:15 PM | | OS: Microsoft Windows XP: Professional x86 Edition, Service Pack 3, (05.01.2600.00)
12/10/2013 5:11:15 PM | | Memory: 3.00 GB physical, 4.85 GB virtual
12/10/2013 5:11:15 PM | | Disk: 279.45 GB total, 216.71 GB free
12/10/2013 5:11:15 PM | | Local time is UTC -5 hours
12/10/2013 5:11:15 PM | | No usable GPUs found
12/10/2013 5:11:15 PM | | Config: don't compute while ResScan.exe is running
12/10/2013 5:11:15 PM | World Community Grid | URL http://www.worldcommunitygrid.org/; Computer ID 1862076; resource share 100
12/10/2013 5:11:15 PM | World Community Grid | General prefs: from World Community Grid (last modified 23-Jul-2013 07:02:57)
12/10/2013 5:11:15 PM | World Community Grid | Computer location: home
12/10/2013 5:11:15 PM | | General prefs: using separate prefs for home
12/10/2013 5:11:15 PM | | Reading preferences override file
12/10/2013 5:11:15 PM | | Preferences:
12/10/2013 5:11:15 PM | | max memory usage when active: 1535.50MB
12/10/2013 5:11:15 PM | | max memory usage when idle: 2303.25MB
12/10/2013 5:11:15 PM | | max disk usage: 4.00GB
12/10/2013 5:11:15 PM | | don't use GPU while active
12/10/2013 5:11:15 PM | | suspend work if non-BOINC CPU load exceeds 50 %
12/10/2013 5:11:15 PM | | (to change preferences, visit a project web site or select Preferences in the Manager)
12/10/2013 5:11:15 PM | | Not using a proxy
12/10/2013 5:11:16 PM | | Suspending network activity - user request
12/10/2013 5:12:16 PM | | Suspending computation - CPU is busy
12/10/2013 5:12:26 PM | | Resuming computation