I had Ubuntu 11.10 and in the last few weeks I experienced an obscure problem: after I had the computer running for a few days I could no longer connect to google.com or anything related to google. All sites worked with all browsers (Firefox, chrome, opera) except google. It remained in the connecting phase for a few minutes and either timed out or finally connected with this huge delay.

Even if I entered other sites such as this one, if it had anything to do with google such adsense or gstatic or whatever with g in it, that site took a long time to load waiting in connecting to gstatic.com . Anything google related took minutes to work, but everything else worked instantly!

I tried rebooting or using other machine(with windows on it) and this worked, so it's not network related. But after a few days it started not working again... So I upgraded to the Precise Pangolin hoping this behavior would go away. It didn't! After a few days I get the same behavior as in 11.10.

What am I supposed to do? Reboot every other day?

I didn't have this problem with neither 10.10 or 11.04.

I found the Realtek RTL8168/8111E issue with the r8169 driver but this is not exactly the same card so probably trying r8168 won't help.

Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller (rev 02)
Subsystem: Toshiba America Info Systems Device ff1c
Flags: bus master, fast devsel, latency 0, IRQ 44
I/O ports at 4000 [size=256]
Memory at d0010000 (64-bit, prefetchable) [size=4K]
Memory at d0000000 (64-bit, prefetchable) [size=64K]
Capabilities: [40] Power Management version 7
Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [70] Express Endpoint, MSI 01
Capabilities: [ac] MSI-X: Enable- Count=2 Masked-
Capabilities: [cc] Vital Product Data
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Virtual Channel
Capabilities: [160] Device Serial Number 09-00-00-00-ff-ff-00-00
Kernel driver in use: r8169
Kernel modules: r8169