Thanks. Re-installing process will start in an hour, it seems that I'm going to wait a bit with Linux until I buy this "slightly" better notebook:
ACER Aspire 7520-6A2G16MI
Screen: 17.0" WXGA+ 16:9; 1440x900
CPU: Mobile AMD Athlon 64 X2 TK55 (2 cores, 64bit), 1800 MHz
Chipset: NVIDIA? nForce? 630M
RAM: 2048MB 2*1024/533MHz
HDD: 160GB 5400RPM SATA
Optical drive: 8x DVD+-RW DL SM drive
Graphic: NVIDIA? GeForce Go 7000M 128MB
Battery: 4000 mAh (Li-ion)
Interfaces: 56K modem, 5in1 Card reader, Digital Audio S/PDIF, ExpressCard slot, FireWire I-link, Gigabit LAN, Infraport, S-Video, USB 2.0 (4*), VGA screen, Webcamera, Wireless 802.11b/g
Size: 404 x 298 x 38/43 mm
Weight: 3.7 kg (monster...)
It costs 179,900 HUF (~700 Euro) - quite reasonable amount of money for this. I'm going to buy it in the early summer. Let's hope it's not a bad choice...